Invalid HTML in secondary tabs

The secondary tabs are outputting invalid HTML as can be seen in this screenshot:

This is caused by the page template, specifically this part:

<?php if ($secondary_local_tasks): ?>
    <div class="tabs-secondary clearfix"><ul class="tabs secondary"><?php print render($secondary_local_tasks); ?></ul></div>
  <?php endif; ?>

When rendered the $secondary_local_tasks already creates a UL and is also being wrapped in a UL causing a UL element and an H2 element to be direct children of another UL which is invalid HTML.

Attached is a patch that remedies this.