message: telemetry_impl: fix in-air/on-ground bug
diff: @@ -109,7 +109,7 @@ void TelemetryImpl::process_extended_sys_state(const mavlink_message_t &message)
  mavlink_msg_extended_sys_state_decode(&message, &extended_sys_state);
  if (extended_sys_state.landed_state == MAV_LANDED_STATE_IN_AIR) {
  set_in_air(true);
  - } else if (extended_sys_state.landed_state == MAV_LANDED_STATE_IN_AIR) {
  + } else if (extended_sys_state.landed_state == MAV_LANDED_STATE_ON_GROUND) {
  set_in_air(false);
  }
  // If landed_state is undefined, we use what we have received last.
  