TYPO3 Core

If you try to create a filelist for files located directly in fileadmin it wont work.

reason:
- a / is automatically added to TSFE->lockFilePath
and clean_directory() removes the trailing / from the path given to filelist.

Therefore the comparison in class.tslib_content.php on line 3290
(function filelist) fails.

Solution (down't know if this ist a secure way):
replace the line
$path = substr($path,0,strlen($GLOBALS['TSFE']->lockFilePath))==$GLOBALS['TSFE']->lockFilePath ? $path : '';

by

$path = substr($path,0,strlen($GLOBALS['TSFE']->lockFilePath)-1)==$GLOBALS['TSFE']->lockFilePath ? $path : '';

(issue imported from #M2661)