Alexander Schnitzler authored Apr 23, 2021 and Anja Leichsenring committed Apr 27, 2021

Update phpstan to version 0.12.84 and fix new issues
detected by the new version.

Releases: master
Resolves: #93979
Change-Id: I7546fedf79656561369008765b303cfb9af246d0
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/68850


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>