Updated mediawiki/extensions
Project: mediawiki/extensions/ProofreadPage  7f34c5627a8d61e10ae85b74cd3a1a4eb40fd65a

ProofreadPage Fatal error: Call to a member function exists() on a non-object

wfFindFile() can return false; not documented to return null

Bug: 50117
Change-Id: I5146e4425a25babb0190ee9d8769a20ef80b35ed