Merged revisions 218687 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r218687 | dvossel | 2009-09-15 14:22:37 -0500 (Tue, 15 Sep 2009) | 2 lines
  
  upward bound checking for port string to int conversion
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@218689 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -2686,7 +2686,7 @@ static int proxy_update(struct sip_proxy *proxy)
 static int port_str2int(const char *pt, unsigned int standard)
 {
 	int port = standard;
-	if (ast_strlen_zero(pt) || (sscanf(pt, "%30d", &port) != 1) || (port < 0)) {
+	if (ast_strlen_zero(pt) || (sscanf(pt, "%30d", &port) != 1) || (port < 1) || (port > 65535)) {
 		port = standard;
 	}