Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  aba83658a80a73e617f73e8c4bd969e847592abc

LocalBufferedCache make consistent with BagOStuff multiGet

Makes LocalBufferedCache treat unfound results the same as BagOStuff does in a
multiGet situation

Change-Id: I26baac260b210dc08be5dda6921e595784088c48