more robust code

mission/payload/PayloadPcduHandler.cpp

@@ -65,6 +65,7 @@ void PayloadPcduHandler::doShutDown() {
     return;
   }
   state = States::PL_PCDU_OFF;
+  quickTransitionAlreadyCalled = false;
   // No need to set mode _MODE_POWER_DOWN, power switching was already handled
   setMode(MODE_OFF);
 }