Fix wrong variable use in Model\Item::getTopLevelParent
Fix wrong variable use in Model\Item::getTopLevelParent

- It was preventing items at levels 3 and beyond to be inserted
- Logging for missing top level parent has been bumped to notice

annando/friendica,tobiasd/friendica,tobiasd/friendica,friendica/friendica,fabrixxm/friendica,annando/friendica,tobiasd/friendica,tobiasd/friendica,fabrixxm/friendica,annando/friendica,tobiasd/friendica,friendica/friendica,friendica/friendica,fabrixxm/friendica,annando/friendica,fabrixxm/friendica,friendica/friendica,friendica/friendica,annando/friendica,fabrixxm/friendica