[TASK] Unit test to cover stdWrap_outerWrap

Resolves: #76550
Releases: master
Change-Id: I1954e1af1a33c14d9eb8175a40a492515604cebc
Reviewed-on: https://review.typo3.org/48532


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>