bug in lib/rfc822scan.c

[max@helios.sixcom.it]

I found a bug in lib/rfc822scan.c. 
The bug manifest itself scanning a nested comment with two consecutive ')' 
like this:
	max (Nested (Comment))


here is a simple patch:
----
*** rfc822scan.c.old	Tue Dec 15 19:58:16 1992
--- rfc822scan.c	Tue Dec 15 19:58:24 1992
***************
*** 119,125 ****
  		if (*cp == cstart && type == Comment) {
  			i = n;
  			n = _hdr_compound(cp, n, cstart, cend,
! 						type, tp, tlist, tlistp);
  			cp = (*tlistp)->t_pname + TOKENLEN(*tlistp) - n;
  		} else if (*cp == '\\') {
  			if (n == 1) {
--- 119,125 ----
  		if (*cp == cstart && type == Comment) {
  			i = n;
  			n = _hdr_compound(cp, n, cstart, cend,
! 						type, tp, tlist, tlistp) +1;
  			cp = (*tlistp)->t_pname + TOKENLEN(*tlistp) - n;
  		} else if (*cp == '\\') {
  			if (n == 1) {
--


+-------------------------------------------------------------------+
|Massimo Fusaro  | E-mail: max@sixcom.it                            |
|Sixtel S.p.A.   | X400: c=it;admd=garr;prmd=IUnet;O=sixcom;S=max   |
|Milan, Italy    | Phone: +39 (2) 3192 216                          |
+-------------------------------------------------------------------+