Copter: correct compilation when logging is disabled

ArduCopter/Log.cpp

@@ -654,10 +654,6 @@ void Copter::log_init(void)
 
 #else // LOGGING_ENABLED
 
-void Copter::Log_Write_AutoTune(uint8_t axis, uint8_t tune_step, float meas_target, \
-                                float meas_min, float meas_max, float new_gain_rp, \
-                                float new_gain_rd, float new_gain_sp, float new_ddt) {}
-void Copter::Log_Write_AutoTuneDetails(float angle_cd, float rate_cds) {}
 void Copter::Log_Write_Nav_Tuning() {}
 void Copter::Log_Write_Control_Tuning() {}
 void Copter::Log_Write_Performance() {}

ArduCopter/mode.h

@@ -368,8 +368,10 @@ private:
     void twitching_measure_acceleration(float &rate_of_change, float rate_measurement, float &rate_measurement_max);
     void get_poshold_attitude(float &roll_cd, float &pitch_cd, float &yaw_cd);
 
+#if LOGGING_ENABLED == ENABLED
     void Log_Write_AutoTune(uint8_t axis, uint8_t tune_step, float meas_target, float meas_min, float meas_max, float new_gain_rp, float new_gain_rd, float new_gain_sp, float new_ddt);
     void Log_Write_AutoTuneDetails(float angle_cd, float rate_cds);
+#endif
 
     void send_step_string();
     const char *level_issue_string() const;