[BUGFIX] Fatal Error in filelist when editing

Regression fix for #61958

Fixes: #63825
Releases: master
Relates: #61958
Change-Id: I06818243c296ac20b5b5f251e5ab57c6a6008632
Reviewed-on: http://review.typo3.org/35385
Reviewed-by: Andreas Fernandez <andreas.fernandez@aspedia.de>
Tested-by: Andreas Fernandez <andreas.fernandez@aspedia.de>
Reviewed-by: Benjamin Mack <benni@typo3.org>
Tested-by: Benjamin Mack <benni@typo3.org>