Updated mediawiki/extensions
Project: mediawiki/extensions/AbuseFilter  5596a3b57248e793f7d73631d26883580cc0e145

Remove call to deprecated MWInit::methodExists with method_exists

MWInit::methodExists was deprecated in 1.22.

Change-Id: I5bbda455c64afa8ac0c9f7d1af03c4c57cff06ca