Avoid accessing undefined variable in Legacy\PageList::setBaseQuery (#4414)
Avoid accessing undefined variable in Legacy\PageList::setBaseQuery (#4414)

* Avoid accessing undefined variable in Legacy\PageList::setBaseQuery

* php-cs-fixer


Former-commit-id: ac381b6c86e936d49584b3f15aa8c7939b831a74
Former-commit-id: da006620e0566b6fb0445b379889e7885705e0a7
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