Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  a73b45291d4a71ab8998d2831d0d6dc0771bf4e7

Revert "Log a warning if ItemChange::getSiteLinkDiff returns a non-array"

This reverts commit 833cf2e85143717b92c7aa2f3b9c8b687230daaa.

Change-Id: I0d7b66dc4a8c738c76d2a413d0d451b0248ab631