Plane: changes for compass healthy API

ArduPlane/GCS_Mavlink.pde

@@ -206,7 +206,7 @@ static NOINLINE void send_extended_status1(mavlink_channel_t chan, uint16_t pack
     control_sensors_health = control_sensors_present & ~(MAV_SYS_STATUS_SENSOR_3D_MAG | 
                                                          MAV_SYS_STATUS_SENSOR_GPS |
                                                          MAV_SYS_STATUS_SENSOR_DIFFERENTIAL_PRESSURE);
-    if (g.compass_enabled && compass.healthy && ahrs.use_compass()) {
+    if (g.compass_enabled && compass.healthy() && ahrs.use_compass()) {
         control_sensors_health |= MAV_SYS_STATUS_SENSOR_3D_MAG;
     }
     if (g_gps != NULL && g_gps->status() > GPS::NO_GPS) {

ArduPlane/test.pde

@@ -522,7 +522,7 @@ test_mag(uint8_t argc, const Menu::arg *argv)
 
             counter++;
             if (counter>20) {
-                if (compass.healthy) {
+                if (compass.healthy()) {
                     const Vector3f &mag_ofs = compass.get_offsets();
                     const Vector3f &mag = compass.get_field();
                     cliSerial->printf_P(PSTR("Heading: %ld, XYZ: %.0f, %.0f, %.0f,\tXYZoff: %6.2f, %6.2f, %6.2f\n"),