Can't access drupal system table

sites/all/modules/civicrm/CRM/Utils/System/Drupal.php is missing curly brackets{} around system in
function getModules() {
$result = array();
$q = db_query('SELECT name, status FROM system WHERE type = \'module\' AND schema_version <> -1');
foreach ($q as $row)

{ $result[] = new CRM_Core_Module('drupal.' . $row->name, ($row->status == 1) ? TRUE : FALSE); }

return $result;
}