$dbw->doAtomicSection( __METHOD__, function ( IDatabase $dbw, $fname ) {
$dbw->insert( 'revision', self::$dummyRev, $fname );
$id = $dbw->insertId();
- $toDelete[] = $id;
+ $toDelete = [ $id ];
$maxId = max(
(int)$dbw->selectField( 'archive', 'MAX(ar_rev_id)', [], $fname ),