add: if (!timerHandler) { W_FlushASAPNotificationQueue(); return; }
context: checkTimerHandlers(){    TimerHandler *handler;    struct timeval now;    rightNow(&now);    while (timerHandler && IS_AFTER(now, timerHandler->when)) {	handler = timerHandler;	timerHandler = timerHandler->next;	handler->next = NULL;	(*handler->callback)(handler->clientData);	wfree(handler);    }    W_FlushASAPNotificationQueue();}