Don't fail a masquerade if it is already being hung up

This avoids noise on some Local channel situations where we don't use /n.
Thanks to Alec Davis for the suggestion.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@288746 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_local.c

@@ -444,7 +444,7 @@ static int local_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
 		p->chan = newchan;
 
 	/* Do not let a masquerade cause a Local channel to be bridged to itself! */
-	if (p->owner->_bridge == p->chan || p->chan->_bridge == p->owner) {
+	if (!ast_check_hangup(newchan) && (p->owner->_bridge == p->chan || p->chan->_bridge == p->owner)) {
 		ast_log(LOG_WARNING, "You can not bridge a Local channel to itself!\n");
 		ast_mutex_unlock(&p->lock);
 		ast_queue_hangup(newchan);