Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  75be2092bc620d984a698a32a2f45c11ff597c57

(hotfix) fixing SpecialWikibasePage

return is needed in SpecialWikibasePage::execute for
other special pages to work properly

Change-Id: I7e8d9e1791350d6757bf727582276a55ab7f18ad