Allow 128 chars in URL alias path

In path.module in function path_form() in field 'dst' is set #maxlenght characters limit to 64 but in database is possible set 128 character path alias...

  $form['dst'] = array(
    '#type' => 'textfield',
    '#default_value' => $edit['dst'],
    '#maxlength' => 64, // HERE
    '#size' => 45,
    '#description' => t('Specify an alternative path by which this data can be accessed. For example, type "about" when writing an about page. Use a
    '#field_prefix' => url(NULL, NULL, NULL, TRUE) . (variable_get('clean_url', 0) ? '' : '?q=')
  );