app_queue: Member stuck as pending after forwarding previous call from queue

Queue member will get stuck in pending_members if queue calls a device
that is different from the one observed for state changes.

This patch removes members from pending_members as a result of channel stasis
events such as blind or attended transfers and hangup.

ASTERISK-26862 #close

Change-Id: I8bf6df487b9bb35726c08049ff25cdad5e357727

apps/app_queue.c

@@ -5510,6 +5510,13 @@ static int update_queue(struct call_queue *q, struct member *member, int callcom
 			member->membername, (long)member->lastcall);
 		ao2_unlock(q);
 	}
+	/* Member might never experience any direct status change (local
+	 * channel with forwarding in particular). If that's the case,
+	 * this is the last chance to remove it from pending or subsequent
+	 * calls will not occur.
+	 */
+	pending_members_remove(member);
+
 	ao2_lock(q);
 	q->callscompleted++;
 	if (callcompletedinsl) {