[FOLLOWUP][BUGFIX] Check if `$rows` is an array before iteration

Use `$table` for logging instead of the hardcoded `pages` table.

Resolves: #74125
Releases: master, 7.6
Change-Id: I13b4306bdc54cf461d23c401d54c04983059df46
Reviewed-on: https://review.typo3.org/48318


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>