GCS_MAVLink: make arguments mandatory for send_autopilot_version

libraries/GCS_MAVLink/GCS.h

@@ -148,7 +148,7 @@ public:
 #if AP_AHRS_NAVEKF_AVAILABLE
     void send_opticalflow(AP_AHRS_NavEKF &ahrs, const OpticalFlow &optflow);
 #endif
-    void send_autopilot_version(uint8_t major_version = 0, uint8_t minor_version = 0, uint8_t patch_version = 0, enum FIRMWARE_VERSION_TYPE version_type = FIRMWARE_VERSION_TYPE_DEV) const;
+    void send_autopilot_version(uint8_t major_version, uint8_t minor_version, uint8_t patch_version, uint8_t version_type) const;
     void send_local_position(const AP_AHRS &ahrs) const;
     void send_vibration(const AP_InertialSensor &ins) const;
 

libraries/GCS_MAVLink/GCS_Common.cpp

@@ -1262,7 +1262,7 @@ void GCS_MAVLINK::send_opticalflow(AP_AHRS_NavEKF &ahrs, const OpticalFlow &optf
 /*
   send AUTOPILOT_VERSION packet
  */
-void GCS_MAVLINK::send_autopilot_version(uint8_t major_version, uint8_t minor_version, uint8_t patch_version, enum FIRMWARE_VERSION_TYPE version_type) const
+void GCS_MAVLINK::send_autopilot_version(uint8_t major_version, uint8_t minor_version, uint8_t patch_version, uint8_t version_type) const
 {
     uint32_t flight_sw_version = 0;
     uint32_t middleware_sw_version = 0;