[BUGFIX] Regression: intval patch broke levelmedia

Change-Id: Ib1c877c1353844dfac1955c39c864a0974bd6b78
Resolves: #55706
Releases: 6.2
Reviewed-on: https://review.typo3.org/27573
Reviewed-by: Stefano Kowalke
Reviewed-by: Jo Hasenau
Tested-by: Jo Hasenau
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind
Reviewed-by: Markus Klein
Tested-by: Markus Klein