[TASK] Add unit test to cover stdWrap_preIfEmptyListNum

Releases: master
Resolves: #76743
Change-Id: Ib9e05e74bc88db4b1e9467c2f295c35de0fbc1c3
Reviewed-on: https://review.typo3.org/48644


Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Tested-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Joerg Boesche <typo3@joergboesche.de>
Tested-by: Joerg Boesche <typo3@joergboesche.de>
Tested-by: Bamboo TYPO3com <info@typo3.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>