Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  3b4afcd126ff2c589933228e9a29e0d7b5837f5a

header editing is broken for headers created by anon users

Fatal error: Call to a member function getName() on a non-object
in /Flow/includes/Block/Topic.php on line 533

This is mainly because User::newFromName() would fail on IPs by default

Change-Id: I8df80b0a959cd7acfafa091ca89d98ad6cf952af