This patch adds an access check to array access and initializes
an empty state object if no configuration is found.

Resolves: #71315
Releases: master
Change-Id: I27aff6654939cee754d2aed008146a437a37762a
Reviewed-on: https://review.typo3.org/44666


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>