ObjFW  Diff

	pool = objc_autoreleasePoolPush();

	for (;;) {
		OFThreadPoolJob *job;

		[_queueCondition lock];
		@try {
			of_list_object_t *listObject;
			OFListItem *listItem;

			if (_terminate) {
				objc_autoreleasePoolPop(pool);
				return nil;
			}

			listObject = _queue.firstListObject;
			listItem = _queue.firstListItem;

			while (listObject == NULL) {
			while (listItem == NULL) {
				[_queueCondition wait];

				if (_terminate) {
					objc_autoreleasePoolPop(pool);
					return nil;
				}

				listObject = _queue.firstListObject;
				listItem = _queue.firstListItem;
			}

			job = [[listObject->object retain] autorelease];
			[_queue removeListObject: listObject];
			job = [[listItem->object retain] autorelease];
			[_queue removeListItem: listItem];
		} @finally {
			[_queueCondition unlock];
		}

		if (_terminate) {
			objc_autoreleasePoolPop(pool);
			return nil;