Only create a route of a match is found

code/template/filter/form.php

@@ -77,27 +77,26 @@ protected function _initialize(ObjectConfig $config)
  */
  public function filter(&$text, TemplateInterface $template)
  {
- $this->_addAction($text, $template->route());
+ $this->_addAction($text, $template);
  $this->_addToken($text);
  $this->_addQueryParameters($text);
  }
 
  /**
  * Add the action if left empty
  *
- * @param string $text Template text
- * @param string $action The action url
-
+ * @param string $text Template text
+ * @param TemplateInterface $template A template object
  * @return TemplateFilterForm
  */
- protected function _addAction(&$text, $action)
+ protected function _addAction(&$text, TemplateInterface $template)
  {
  // All: Add the action if left empty
  if (preg_match_all('#<\s*form.*?action=""#sim', $text, $matches, PREG_SET_ORDER))
  {
  foreach ($matches as $match)
  {
- $str = str_replace('action=""', 'action="' . $action . '"', $match[0]);
+ $str = str_replace('action=""', 'action="' . $template->route() . '"', $match[0]);
  $text = str_replace($match[0], $str, $text);
  }
  }