notice fixes for WebTest_Campaign_OnlineEventRegistrationTest

CRM/Event/Form/Registration/AdditionalParticipant.php

@@ -729,7 +729,7 @@ class CRM_Event_Form_Registration_AdditionalParticipant extends CRM_Event_Form_R
     }
   }
 
-  function &getPages($additionalParticipant) {
+  public static function &getPages($additionalParticipant) {
     $details = array();
     for ($i = 1; $i <= $additionalParticipant; $i++) {
       $details["Participant_{$i}"] = array(