Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  c2c6143a9d2e79e33d5228f87f541702908689ac

Don't alter the object passed to ByPropertyListSerializer::getSerialized

Similar to: Ia5e9e7d7

Change-Id: I8124225a03c9fbb977e81bb870390a533236ebca