Merged revisions 159269 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r159269 | tilghman | 2008-11-25 15:56:48 -0600 (Tue, 25 Nov 2008) | 7 lines
  
  Don't try to send a response on a NULL pvt.
  (closes issue #13919)
   Reported by: barthpbx
   Patches: 
         chan_iax2.c.patch uploaded by eliel (license 64)
   Tested by: barthpbx
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@159276 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -7208,7 +7208,7 @@ static int update_registry(struct sockaddr_in *sin, int callno, char *devtype, i
 
 	/* Make sure our call still exists, an INVAL at the right point may make it go away */
 	if (!iaxs[callno]) {
-		res = 0;
+		res = -1;
 		goto return_unref;
 	}