Let's NOT create a deadlock scenario here

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@72304 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_zap.c

@@ -8782,7 +8782,7 @@ static void *ss7_linkset(void *data)
 				ast_mutex_lock(&p->lock);
 				if (p->owner) {
 					p->owner->hangupcause = e->rel.cause;
-					ast_queue_hangup(p->owner);
+					p->owner->_softhangup |= AST_SOFTHANGUP_DEV;
 				} else
 					ast_log(LOG_WARNING, "REL on channel (CIC %d) without owner!\n", p->cic);