$oldMime = $old->getMimeType();
$n = strrpos( $new, '.' );
$newExt = self::normalizeExtension( $n ? substr( $new, $n + 1 ) : '' );
- $mimeMagic = MimeMagic::singleton();
+ $mimeMagic = MediaWiki\MediaWikiServices::getInstance()->getMimeAnalyzer();
return $mimeMagic->isMatchingExtension( $newExt, $oldMime );
}