Fix another typo in LDMP receiver

metobscommon/archive/loggernet_receiver.py

@@ -63,7 +63,7 @@ class LDMPReceiver(object):
         if not self._started:
             return
         self._run_event.clear()
-        self.worker.join()
+        self._worker.join()
         self._started = False
         LOG.info("Background thread successfully terminated")