[BUGFIX] Stop calling a non-static method statically

Resolves: #92344
Releases: master, 10.4
Change-Id: Ia34b93a6fefaee408da7b54965cf02e138cadf26
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/65769


Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>