[BUGFIX] Fix PHP 8 warning in LinkAnalyzer

Resolves: #95960
Releases: master
Change-Id: I5853d135ce20b1e9b53806a16fb734ab87c41b2b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/72159


Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Benni Mack <benni@typo3.org>