Don't use sockaddr->sa_len, it was too advanced for POSIX people

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1393 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache.h

@@ -257,6 +257,7 @@ struct sess {
 
 	unsigned		sockaddrlen;
 	struct sockaddr		sockaddr[2];
+	unsigned		mysockaddrlen;
 	struct sockaddr		mysockaddr[2];
 
 	/* formatted ascii client address */

bin/varnishd/cache_vrt.c

@@ -264,10 +264,10 @@ VRT_r_server_ip(struct sess *sp)
 {
 	socklen_t l;
 
-	if (sp->mysockaddr->sa_len == 0) {
+	if (sp->mysockaddrlen == 0) {
 		l = sizeof sp->mysockaddr;
 		AZ(getsockname(sp->fd, sp->mysockaddr, &l));
-		assert(l == sp->mysockaddr->sa_len);
+		sp->mysockaddrlen = l;
 	}
 
 	return (sp->mysockaddr);