fix a crash during the update call

aman/AMAN.py

@@ -91,8 +91,7 @@ class AMAN:
         # find the correct worker for the inbound
         for worker in self.workers:
             if worker.icao == report.destination:
-                print('Updated ' + report.aircraft.callsign + ' for ' + worker.icao)
-                worker.acquire()
+                worker.acquireLock()
                 worker.reportQueue[report.aircraft.callsign] = report
-                worker.release()
+                worker.releaseLock()
                 break