[BUGFIX] Fix OpcodeCache for PHP 5.3

In PHP 5.3 anonymous functions can't be bound to static/self so an extra
call to a public function is needed.

Resolves: #56546
Related: #55252
Releases: 6.2
Change-Id: I56fc8c4ae92e50c35e972413540b43ec1fa714fc
Reviewed-on: https://review.typo3.org/28048
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Wouter Wolters
Reviewed-by: Xavier Perseguers
Tested-by: Xavier Perseguers