Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  e3263c2281e7fdfb9467fdc8519dd5a1d1ecfec7

(bug 46867) skip bad search keys and report them.

rebuildTermsSearchKey.php now reports terms for which no search key
could be calculated, and skips them.

Change-Id: Iedd9cc3b56c0db2e5ed6c02a398d7c35b1c96a1b