Issue #1697522 by josebc: Fixed Notice: Undefined index: #title in...

Issue #1697522 by josebc: Fixed Notice: Undefined index: #title in clientside_validation_regular() in forms with captcha.

clientside_validation_form/clientside_validation_form.module

@@ -211,7 +211,7 @@ function clientside_validation_regular($form_id, $element, &$js_rules, $form_sta
       case 'captcha':
         $settings = clientside_validation_settings_current_form();
         if ($settings['validate_options']['captcha']) {
-          $title = _clientside_validation_set_title($element['captcha_widgets']['captcha_response']['#title']);
+          $title = _clientside_validation_set_title(isset($element['captcha_widgets']['captcha_response']['#title']) ? $element['captcha_widgets']['captcha_response']['#title'] : $element['#name']);
           $message = t('Wrong answer for !title', array('!title' => $title));
           $case_sensitive = strpos($element['#captcha_validate'], 'insensitive') === FALSE;
           _clientside_validation_set_captcha($element['captcha_widgets']['captcha_response']['#name'], $title, $element['#captcha_validate'], $js_rules, $message);