minor bug in channels.c

[Lincoln Stein]

On openssh-2.2.0p1, I found that with certain Linux kernel
configurations the check for unsupported address families in
channels.c fails because the errno returned is EAFNOSUPPORT rather
than EINVAL.  This causes the sshd server to terminate when trying to
set up X11 forwarding.

A patch is enclosed.  Keep up the great work!

Best,

Lincoln

-- 
========================================================================
Lincoln D. Stein                           Cold Spring Harbor Laboratory
lstein at cshl.org			                  Cold Spring Harbor, NY
Positions available at my lab: see http://stein.cshl.org/#hire
========================================================================


*** channels.c.orig	Tue Aug 22 20:46:24 2000
--- channels.c	Fri Dec 15 22:35:48 2000
***************
*** 1740,1746 ****
  				continue;
  			sock = socket(ai->ai_family, SOCK_STREAM, 0);
  			if (sock < 0) {
! 				if (errno != EINVAL) {
  					error("socket: %.100s", strerror(errno));
  					return NULL;
  				} else {
--- 1740,1746 ----
  				continue;
  			sock = socket(ai->ai_family, SOCK_STREAM, 0);
  			if (sock < 0) {
! 				if (errno != EINVAL && errno != EAFNOSUPPORT) {
  					error("socket: %.100s", strerror(errno));
  					return NULL;
  				} else {