message: params_raw: fix invalid type
diff: @@ -37,7 +37,7 @@ ParamsRaw::Result ParamsRawImpl::set_param_int(const std::string &name, int32_t
  std::pair<ParamsRaw::Result, float> ParamsRawImpl::get_param_float(const std::string &name)
  {
  - std::pair<MAVLinkParameters::Result, int32_t> result = _parent->get_param_float(name);
  + std::pair<MAVLinkParameters::Result, float> result = _parent->get_param_float(name);
  return std::make_pair<>(result_from_mavlink_parameters_result(result.first), result.second);
  }
  