linkHandler Hook Not Initialized Properly
TYPO3 4.1.0 added a new hook for linkHandlers in tslib_content to allow extensions to link to individual records.
The code here uses TYPO3_CONF_VARS to initialize the hook, but the TYPO3_CONF_VARS are not declared as a global so the hook array is always empty.
I"m attaching the very trivial patch to declare them as a global and also to make sure the hook method exists before it is called.
(issue imported from #M5701)