Updated mediawiki/extensions
Project: mediawiki/extensions/MassMessage  3fcd3f0a01e625b6a5085452f09ef50842b73dec

Check that a value for global messaging is set before using it's value

If the user doesn't have the massmessage-global userright, they won't get the
checkbox, so a value is never set for $data['global']. Now it checks that
the value is set and is true.

Change-Id: I88daf6faaab9af32685d6ca9b1cd1f261fd03bb1