message: Make function static
diff: @@ -165,7 +165,7 @@ Status ParseS3Path(const string& fname, bool empty_object_ok, string* bucket,
  return Status::OK();
  }
  -Status CheckForbiddenError(const Aws::Client::AWSError<Aws::S3::S3Errors>& error) {
  +static Status CheckForbiddenError(const Aws::Client::AWSError<Aws::S3::S3Errors>& error) {
  if (error.GetResponseCode() == Aws::Http::HttpResponseCode::FORBIDDEN) {
  return errors::FailedPrecondition("AWS Credentials have not been set properly. "
  "Unable to access the specified S3 location");
  @@ -174,7 +174,7 @@ Status CheckForbiddenError(const Aws::Client::AWSError<Aws::S3::S3Errors>& error
  }
  }
  -Status CreateStatusFromAwsError(const Aws::Client::AWSError<Aws::S3::S3Errors>& error) {
  +static Status CreateStatusFromAwsError(const Aws::Client::AWSError<Aws::S3::S3Errors>& error) {
  TF_RETURN_IF_ERROR(CheckForbiddenError(error));
  return errors::Unknown(error.GetExceptionName(), ": ", error.GetMessage());
  }
  