Ensure the parent field isn't set during Item insertion
Ensure the parent field isn't set during Item insertion

- Avoid a database error if a null value is provided

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