Updated mediawiki/extensions
Project: mediawiki/extensions/DumpHTML  de571b44afec6d157cd44206b36b0b103b1a3227

Call RepoGroup constructor for subclass

Subclasses should always call their parent's constructor. The fact that
PHP allows otherwise is a goofy leftover from the PHP4 "these are kind
of object but really more like Perl4's blessed hashes" past.

Change-Id: Iefb7f2482b5a8d40d98cfed03aa37e370624ff1f