ObjFW  Diff

	pool = objc_autoreleasePoolPush();

	for (;;) {
		OFThreadPoolJob *job;

		[_queueCondition lock];
		@try {
			OFListItem listItem;

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

			listItem = _queue.firstListItem;

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

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

				listItem = _queue.firstListItem;
			}

			job = [[OFListItemObject(listItem) retain] autorelease];
			[_queue removeListItem: listItem];
		} @finally {
			[_queueCondition unlock];
		}

		if (_terminate) {
			objc_autoreleasePoolPop(pool);