Fix a bug where direct RTP setup would partially occur even when disabled if the calling channel was answered.

(issue #13545)
Reported by: davidw
(issue #14244)
Reported by: mbnwa


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@195448 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -18528,7 +18528,7 @@ static int sip_set_rtp_peer(struct ast_channel *chan, struct ast_rtp *rtp, struc
 		return -1;
 
 	/* Disable early RTP bridge  */
-	if (chan->_state != AST_STATE_UP && !global_directrtpsetup) 	/* We are in early state */
+	if (!ast_bridged_channel(chan) && !global_directrtpsetup) 	/* We are in early state */
 		return 0;
 
 	ast_mutex_lock(&p->lock);