[BUGFIX] noTrimWrap = | || won't work inside a menu

The issue is caused by the implementation of optionSplit. This patch
solves this issue by checking for noTrimWrap.

Change-Id: I1d2a6705b679c2d11433902ca992bc907e520228
Fixes: #20793
Releases: master, 6.2
Reviewed-on: http://review.typo3.org/7255
Reviewed-by: Mathias Schreiber <mathias.schreiber@wmdb.de>
Tested-by: Mathias Schreiber <mathias.schreiber@wmdb.de>
Reviewed-by: Benjamin Mack <benni@typo3.org>
Tested-by: Benjamin Mack <benni@typo3.org>