Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  1d5dcbf1dcb607f4a82788e99da0010b9f707934

Reset output buffers after each test.

Previously, some tests left an output buffer in place,
preventing output from phpunit to continue.

Change-Id: I2e040157b4aadf6bb18581ef2495862d680feec5