message: Remove an extra Unref().
diff: @@ -182,7 +182,6 @@ Status MaybeCopyInputToExpectedDevice(EagerOperation* op, Device* op_device,
  ctx->MirrorTensors(), &result_handle);
  activity.Stop();
  if (!status.ok()) {
  - if (result_handle != nullptr) result_handle->Unref();
  return errors::Internal("Failed copying input tensor from ",
  handle_device->name(), " to ",
  expected_input_device->name(), " in order to run ",
  