AP_InertialSensor: add override keyword

libraries/AP_InertialSensor/AP_InertialSensor.h

@@ -562,11 +562,11 @@ private:
     AccelCalibrator *_accel_calibrator;
 
     //save accelerometer bias and scale factors
-    void _acal_save_calibrations();
+    void _acal_save_calibrations() override;
-    void _acal_event_failure();
+    void _acal_event_failure() override;
 
     // Returns AccelCalibrator objects pointer for specified acceleromter
-    AccelCalibrator* _acal_get_calibrator(uint8_t i) { return i<get_accel_count()?&(_accel_calibrator[i]):nullptr; }
+    AccelCalibrator* _acal_get_calibrator(uint8_t i) override { return i<get_accel_count()?&(_accel_calibrator[i]):nullptr; }
 
     float _trim_pitch;
     float _trim_roll;

libraries/AP_InertialSensor/AP_InertialSensor_HIL.h

@@ -9,7 +9,7 @@ public:
     AP_InertialSensor_HIL(AP_InertialSensor &imu);
 
     /* update accel and gyro state */
-    bool update();
+    bool update() override;
 
     // detect the sensor
     static AP_InertialSensor_Backend *detect(AP_InertialSensor &imu);

libraries/AP_InertialSensor/AP_InertialSensor_PX4.h

@@ -20,7 +20,7 @@ public:
     AP_InertialSensor_PX4(AP_InertialSensor &imu);
 
     /* update accel and gyro state */
-    bool update();
+    bool update() override;
 
     // detect the sensor
     static AP_InertialSensor_Backend *detect(AP_InertialSensor &imu);

libraries/AP_InertialSensor/AP_InertialSensor_SITL.h

@@ -13,7 +13,7 @@ public:
     AP_InertialSensor_SITL(AP_InertialSensor &imu);
 
     /* update accel and gyro state */
-    bool update();
+    bool update() override;
 
     // detect the sensor
     static AP_InertialSensor_Backend *detect(AP_InertialSensor &imu);