Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  945233bbc6b5c3efdda87b8a7c195bd2791990f6

Check if item id exists before passing to SiteLinksView

Item id is used as a param for the SpecialSetSiteLink page,
but might be null if a new item.

Bug: 67361
Change-Id: I876674e78feb337f71ed6aeb6b60297d0417a15a