Little FIX for ArrayUtility.php

[alexk136]

Hi, i think its better to use '==' instead of '===', in this case will also match "",[],0... So i think its bettre option to remove empty stuff from array. What you think?

[TYPO3IncTeam]

Thank you for your contribution to TYPO3. We are using Gerrit Code Review for our contributions and took the liberty to convert your pull request to a review in our review system.
You can find your patch at: https://review.typo3.org/59001
For further information on how to contribute have a look at https://docs.typo3.org/typo3cms/ContributionWorkflowGuide/