subscribe triggered on first page of multi-page webform

So I made a patch to fix this - before calling _webform_campaignmonitor_subscribe() the new code simply checks if the current_page == total_number_pages. Seems to be working ok.

//check if last page of multi-page webform
if($form_state['webform']['page_count'] == $form_state['webform']['page_num']) {
  // Attempt to subscribe the user.
  $results = $results + _webform_campaignmonitor_subscribe(array($list), $email, $name, $custom_fields);
}