fix Vehicle: update _healthAndArmingCheckReport only if it has a valid result

src/Vehicle/EventHandler.cc

@@ -80,6 +80,7 @@ void EventHandler::gotEvent(const mavlink_event_t& event)
             "name:" << parsed_event->name().c_str() << "msg:" << parsed_event->message().c_str();
 
     if (_healthAndArmingChecks.handleEvent(*parsed_event)) {
+        _healthAndArmingChecksValid = true;
         emit healthAndArmingChecksUpdated();
     }
     _handleEventCB(std::move(parsed_event));

src/Vehicle/EventHandler.h

@@ -38,6 +38,7 @@ public:
     void setMetadata(const QString& metadataJsonFileName);
 
     const events::HealthAndArmingChecks::Results& healthAndArmingCheckResults() const { return _healthAndArmingChecks.results(); }
+    bool healthAndArmingCheckResultsValid() const { return _healthAndArmingChecksValid; }
 
     int getModeGroup(int32_t customMode);
 
@@ -56,6 +57,7 @@ private:
     QTimer _timer;
     events::parser::Parser _parser;
     events::HealthAndArmingChecks _healthAndArmingChecks;
+    bool _healthAndArmingChecksValid{false};
     QVector<mavlink_event_t> _pendingEvents; ///< stores incoming events until we have the metadata loaded
     handle_event_f _handleEventCB;
     send_request_event_message_f _sendRequestCB;

src/Vehicle/Vehicle.cc

@@ -1655,8 +1655,10 @@ EventHandler& Vehicle::_eventHandler(uint8_t compid)
         });
         connect(this, &Vehicle::flightModeChanged, this, [compid, this]() {
             const QSharedPointer<EventHandler>& eventHandler = _events[compid];
+            if (eventHandler->healthAndArmingCheckResultsValid()) {
                 _healthAndArmingCheckReport.update(compid, eventHandler->healthAndArmingCheckResults(),
                                                    eventHandler->getModeGroup(_custom_mode));
+            }
         });
     }
     return *eventData->data();