[BUGFIX] Follow-up to fully qualified name resolution in PHP 5.5

One false substitution slipped through and is reverted to its
original state again.

Change-Id: Ief0a3dde558a35cfdb17a8b96ecdefecadd8c3ec
Resolves: #63112
Releases: master
Reviewed-on: http://review.typo3.org/34445
Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>
Reviewed-by: Frank Nägler <typo3@naegler.net>
Tested-by: Frank Nägler <typo3@naegler.net>