Error installing w/o javascript

When I install by using this URL
install.php?profile=default&locale=en&id=1&op=do_nojs

I get the following error
Notice: Undefined variable: finished in _batch_process() (line 251 of /home/dhubler/work/org.drupal/includes/batch.inc).

I assume the problem is because javascript is disabled, but this works otherwise

In batch.inc I do see a situation where $finished is used but not defined, but I do not know the reason yet

  while (!$current_set['success']) {
     ...
    $finished = 1;
     ...
  }

  if ($batch['progressive']) {
     ...
     $current    = $total - $remaining + $finished;