Stop musiconhold on attended transfer.

(closes issue #11872)
Reported by: gareth
Patches: 
      svn-101018.patch uploaded by gareth (license 208)



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@101152 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -13145,7 +13145,9 @@ static int sip_park(struct ast_channel *chan1, struct ast_channel *chan2, struct
 static void ast_quiet_chan(struct ast_channel *chan) 
 {
 	if (chan && chan->_state == AST_STATE_UP) {
-		if (chan->generatordata)
+		if (ast_test_flag(chan, AST_FLAG_MOH))
+			ast_moh_stop(chan);
+		else if (chan->generatordata)
 			ast_deactivate_generator(chan);
 	}
 }