Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  379f3d706bc2bc67fd3d79445312ffdf2b196dea

Return ArrayIterator in SqlUsageTracker::getPagesUsing

if empty, return an empty Array Iterator object and
not an array, since that is what is expected.

Change-Id: I08d3cb465181c9d47e935fafabe74d7fd0e69e86