Parse error: syntax error, unexpected T_ELSE in class.csstidy.inc

Our subversion repository has pre-commit hooks to prevent code being committed with PHP errors. When I tried to commit this module I got:

Parse error: syntax error, unexpected T_ELSE in
drupal/trunk/modules/contrib/advagg/advagg_css_compress/csstidy/class.csstidy.inc
on line 1028

Looking at the code it looks like the else is in the wrong place:

    while (isset($this->css[$media])) {
      if (is_numeric($media)) {
        $media++;
      }
    }
    else {
      $media .= " ";
    }