No extra newlines in the error messages.
 [rsc] --rw-rw-r-- M 249245 glenda sys 11255 Sep 17 11:36 acme/mail/src/mail.c
	/n/sourcesdump/2005/0917/plan9/acme/mail/src/mail.c:151,157 - 
	/n/sourcesdump/2005/0918/plan9/acme/mail/src/mail.c:151,157
	  	s = estrstrdup(maildir, "ctl");
	  	mbox.ctlfd = open(s, ORDWR|OCEXEC);
	  	if(mbox.ctlfd < 0)
	- 		error("can't open %s: %r\n", s);
	+ 		error("can't open %s: %r", s);
	  
	  	fsname = estrdup(name);
	  	if(newdir && argc > 0){
	/n/sourcesdump/2005/0917/plan9/acme/mail/src/mail.c:163,169 - 
	/n/sourcesdump/2005/0918/plan9/acme/mail/src/mail.c:163,169
	  			err[0] = '\0';
	  			errstr(err, sizeof err);
	  			if(strstr(err, "mbox name in use") == nil)
	- 				error("can't create directory %s for mail: %s\n", name, err);
	+ 				error("can't create directory %s for mail: %s", name, err);
	  			free(fsname);
	  			fsname = emalloc(strlen(name)+10);
	  			sprint(fsname, "%s-%d", name, i);
 [rsc] --rw-rw-r-- M 249245 glenda sys 26290 Sep 17 11:36 acme/mail/src/mesg.c
	/n/sourcesdump/2005/0917/plan9/acme/mail/src/mesg.c:533,539 - 
	/n/sourcesdump/2005/0918/plan9/acme/mail/src/mesg.c:533,539
	  	Message *n, *next;
	  
	  	if(m->opened)
	- 		error("internal error: deleted message still open in mesgdel\n");
	+ 		error("internal error: deleted message still open in mesgdel");
	  	/* delete subparts */
	  	for(n=m->head; n!=nil; n=next){
	  		next = n->next;
 [sys] --rwxrwxr-x M 249245 rsc sys 179106 Sep 17 23:09 acme/bin/386/Mail
	/acme/mail/src/mail.c:mainctl
	/acme/mail/src/mail.c:mboxcommand
	/acme/mail/src/mail.c:plumbproc
	/acme/mail/src/mail.c:plumbsendproc
	/acme/mail/src/mail.c:plumbsendthread
	/acme/mail/src/mail.c:plumbshowproc
	/acme/mail/src/mail.c:plumbshowthread
	/acme/mail/src/mail.c:plumbthread
	/acme/mail/src/mail.c:showmesg
	/acme/mail/src/mail.c:threadmain
	/acme/mail/src/mesg.c:expandaddr
	/acme/mail/src/mesg.c:ext
	/acme/mail/src/mesg.c:isemail
	/acme/mail/src/mesg.c:mesgcommand
	/acme/mail/src/mesg.c:mesgctl
	/acme/mail/src/mesg.c:mesgline
	/acme/mail/src/mesg.c:mesgload
	/acme/mail/src/mesg.c:mesglookup
	/acme/mail/src/mesg.c:mesgopen
	/acme/mail/src/mesg.c:mesgsave
	/acme/mail/src/mesg.c:mesgtagpost
	/acme/mail/src/mesg.c:mimedisplay
	/acme/mail/src/mesg.c:plumb
	/acme/mail/src/mesg.c:printheader
	/acme/mail/src/mesg.c:replytoaddr
	/acme/mail/src/mesg.c:rewritembox

Describe the "port" file.
 [rsc] --rw-rw-r-- M 249245 glenda sys 6960 Sep 17 11:37 sys/man/3/usb
	/n/sourcesdump/2005/0917/plan9/sys/man/3/usb:201,206 - 
	/n/sourcesdump/2005/0918/plan9/sys/man/3/usb:201,209
	  .SH FILES
	  .TF "#U/usb n /*/status"
	  .TP
	+ .BI #U/usb n /port
	+ USB port status file; for each port, space separated: port number, hexadecimal port status, port status string
	+ .TP
	  .BI #U/usb n /*/status
	  USB device status file; class/subclass/proto, vendor-id and product-id are found in line one
	  .TP

Leak less memory.
 [rsc] --rw-rw-r-- M 249245 glenda sys 54895 Sep 17 11:38 sys/src/libsec/port/tlshand.c
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/tlshand.c:2068,2076 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/tlshand.c:2068,2079
	  	uchar *a;
	  	Bytes* ans;
	  
	+ 	a = nil;
	  	n = (mpsignif(big)+7)/8;
	  	m = mptobe(big, nil, n, &a);
	  	ans = makebytes(a, m);
	+ 	if(a != nil)
	+ 		free(a);
	  	return ans;
	  }
	  
 [rsc] --rw-rw-r-- M 249245 glenda sys 50653 Sep 17 11:39 sys/src/libsec/port/x509.c
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:1459,1465 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:1459,1465
	  		freeints(v->u.objidval);
	  		break;
	  	case VString:
	- 		if (v->u.stringval)
	+ 		if(v->u.stringval)
	  			free(v->u.stringval);
	  		break;
	  	case VSeq:
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:1466,1472 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:1466,1472
	  		el = v->u.seqval;
	  		for(l = el; l != nil; l = l->tl)
	  			freevalfields(&l->hd.val);
	- 		if (el)
	+ 		if(el)
	  			freeelist(el);
	  		break;
	  	case VSet:
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:1473,1479 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:1473,1479
	  		el = v->u.setval;
	  		for(l = el; l != nil; l = l->tl)
	  			freevalfields(&l->hd.val);
	- 		if (el)
	+ 		if(el)
	  			freeelist(el);
	  		break;
	  	}
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:1598,1604 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:1598,1604
	  static void
	  freecert(CertX509* c)
	  {
	- 	if (!c) return;
	+ 	if(!c) return;
	  	if(c->issuer != nil)
	  		free(c->issuer);
	  	if(c->validity_start != nil)
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:1609,1614 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:1609,1615
	  		free(c->subject);
	  	freebytes(c->publickey);
	  	freebytes(c->signature);
	+ 	free(c);
	  }
	  
	  /*
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:1831,1845 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:1832,1849
	  decode_rsapubkey(Bytes* a)
	  {
	  	Elem e;
	- 	Elist *el;
	+ 	Elist *el, *l;
	  	mpint *mp;
	  	RSApub* key;
	  
	+ 	l = nil;
	  	key = rsapuballoc();
	  	if(decode(a->data, a->len, &e) != ASN_OK)
	  		goto errret;
	  	if(!is_seq(&e, &el) || elistlen(el) != 2)
	  		goto errret;
	+ 	
	+ 	l = el;
	  
	  	key->n = mp = asn1mpint(&el->hd);
	  	if(mp == nil)
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:1849,1856 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:1853,1865
	  	key->ek = mp = asn1mpint(&el->hd);
	  	if(mp == nil)
	  		goto errret;
	+ 
	+ 	if(l != nil)
	+ 		freeelist(l);
	  	return key;
	  errret:
	+ 	if(l != nil)
	+ 		freeelist(l);
	  	rsapubfree(key);
	  	return nil;
	  }
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:2003,2010 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:2012,2022
	  	   p+length < p)
	  		return;
	  	info = p;
	- 	if(ber_decode(&p, pend, &elem) != ASN_OK || elem.tag.num != SEQUENCE)
	+ 	if(ber_decode(&p, pend, &elem) != ASN_OK)
	  		return;
	+ 	freevalfields(&elem.val);
	+ 	if(elem.tag.num != SEQUENCE)
	+ 		return;
	  	infolen = p - info;
	  	(*digestfun)(info, infolen, digest, nil);
	  }
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:2019,2025 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:2031,2041
	  	int buflen;
	  	mpint *pkcs1;
	  	int nlen;
	+ 	char *err;
	  
	+ 	err = nil;
	+ 	pkcs1buf = nil;
	+ 
	  	/* one less than the byte length of the modulus */
	  	nlen = (mpsignif(pk->n)-1)/8;
	  
	/n/sourcesdump/2005/0917/plan9/sys/src/libsec/port/x509.c:2029,2050 - 
	/n/sourcesdump/2005/0918/plan9/sys/src/libsec/port/x509.c:2045,2079
	  	pkcs1buf = nil;
	  	buflen = mptobe(pkcs1, nil, 0, &pkcs1buf);
	  	buf = pkcs1buf;
	- 	if(buflen != nlen || buf[0] != 1)
	- 		return "expected 1";
	+ 	if(buflen != nlen || buf[0] != 1) {
	+ 		err = "expected 1";
	+ 		goto end;
	+ 	}
	  	buf++;
	  	while(buf[0] == 0xff)
	  		buf++;
	- 	if(buf[0] != 0)
	- 		return "expected 0";
	+ 	if(buf[0] != 0) {
	+ 		err = "expected 0";
	+ 		goto end;
	+ 	}
	  	buf++;
	  	buflen -= buf-pkcs1buf;
	  	if(decode(buf, buflen, &e) != ASN_OK || !is_seq(&e, &el) || elistlen(el) != 2 ||
	- 			!is_octetstring(&el->tl->hd, &digest))
	- 		return "signature parse error";
	+ 			!is_octetstring(&el->tl->hd, &digest)) {
	+ 		err = "signature parse error";
	+ 		goto end;
	+ 	}
	  	*psigalg = &el->hd;
	  	if(memcmp(digest->data, edigest, digest->len) == 0)
	- 		return nil;
	- 	return "digests did not match";
	+ 		goto end;
	+ 	err = "digests did not match";
	+ 
	+ end:
	+ 	if(pkcs1 != nil)
	+ 		mpfree(pkcs1);
	+ 	if(pkcs1buf != nil)
	+ 		free(pkcs1buf);
	+ 	return err;
	  }
	  	
	  RSApub*
 [sys] --rwxrwxr-x M 249245 glenda sys 232667 Sep 17 23:09 386/bin/hget
 [sys] --rwxrwxr-x M 249245 glenda sys 471908 Sep 17 23:09 386/bin/vncs
 [sys] --rwxrwxr-x M 249245 glenda sys 518730 Sep 17 23:09 386/bin/vncv
 [sys] --rwxrwxr-x M 249245 glenda sys 272234 Sep 17 23:09 386/bin/ftpfs
 [sys] --rwxrwxr-x M 249245 glenda sys 349999 Sep 17 23:09 386/bin/webfs
	/sys/src/libsec/port/tlshand.c:mptobytes
	/sys/src/libsec/port/x509.c:decode_rsapubkey
	/sys/src/libsec/port/x509.c:digest_certinfo
	/sys/src/libsec/port/x509.c:freecert
	/sys/src/libsec/port/x509.c:verify_signature
 [sys] --rwxrwxr-x M 249245 rsc sys 119856 Sep 17 23:09 386/bin/auth/asn12rsa
 [sys] --rwxrwxr-x M 249245 rsc sys 179931 Sep 17 23:09 386/bin/auth/rsa2csr
 [sys] --rwxrwxr-x M 249245 rsc sys 183692 Sep 17 23:09 386/bin/auth/rsa2x509
	/sys/src/libsec/port/x509.c:decode_rsapubkey
	/sys/src/libsec/port/x509.c:digest_certinfo
	/sys/src/libsec/port/x509.c:freecert
	/sys/src/libsec/port/x509.c:verify_signature
 [sys] --rwxrwxr-x M 249245 glenda sys 291029 Sep 17 23:09 386/bin/ip/httpd/httpd
 [sys] --rwxrwxr-x M 249245 rsc sys 197885 Sep 17 23:09 386/bin/tlsclient
 [sys] --rwxrwxr-x M 249245 glenda sys 198123 Sep 17 23:09 386/bin/tlssrv
 [sys] --rwxrwxr-x M 249245 glenda sys 333054 Sep 17 23:09 386/bin/upas/fs
 [sys] --rwxrwxr-x M 249245 glenda sys 260589 Sep 17 23:09 386/bin/upas/pop3
 [sys] --rwxrwxr-x M 249245 glenda sys 274558 Sep 17 23:09 386/bin/upas/smtp
 [sys] --rwxrwxr-x M 249245 glenda sys 329607 Sep 17 23:09 386/bin/upas/smtpd
	/sys/src/libsec/port/tlshand.c:mptobytes
	/sys/src/libsec/port/x509.c:decode_rsapubkey
	/sys/src/libsec/port/x509.c:digest_certinfo
	/sys/src/libsec/port/x509.c:freecert
	/sys/src/libsec/port/x509.c:verify_signature
 [sys] --rw-rw-r-- M 249245 glenda sys 645922 Sep 17 23:09 386/lib/libsec.a