Updated mediawiki/extensions
Project: mediawiki/extensions/WikiForum  65e2b34e8eed2da79a2611be2f995fd8f733b82b

fix calling show() of non-object

code expect WFForum object to call show()
but addForum() use WFForum::add() which return string and call $forum-show() itself

Change-Id: I7869f602d33405a1e8d29e61a3f88867ae180de6