[BUGFIX] Fix phpdoc comment reported by phpstan

phpstan requires, that a @var PHPDoc comment is immediately followed
by the variable in the next line.

Resolves: #90765
Releases: master
Change-Id: I4c11582dd4831b2a9433ffd0bb262ab34a7d4e33
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63731


Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>