Igrnore presence status notifications for a proto contact if no corresponding meta contact is found

src/net/java/sip/communicator/impl/contactlist/MetaContactListServiceImpl.java

@@ -2317,6 +2317,10 @@ public void contactPresenceStatusChanged(
         MetaContactImpl metaContactImpl =
             (MetaContactImpl) findMetaContactByContact(evt.getSourceContact());
 
+        //ignore if we have no meta contact.
+        if(metaContactImpl == null)
+            return;
+
         metaContactImpl.reevalContact();
 
         fireMetaContactGroupEvent(