rem: W_FlushIdleNotificationQueue(); return;
add: return False;
context: checkIdleHandlers(){    IdleHandler *handler, *tmp;    if (!idleHandler) {	W_FlushIdleNotificationQueue();	return;    }    handler = idleHandler;        /* we will process all idleHandlers so, empty the handler list */    idleHandler = NULL;    while (handler) {	tmp = handler->next;	(*handler->callback)(handler->clientData);	/* remove the handler */	wfree(handler);		handler = tmp;    }    W_FlushIdleNotificationQueue();}