message: Update documentation, add brackets.
diff: @@ -739,14 +739,16 @@ void LaunchConv2DOp<GPUDevice, T>::operator()(
  To32Bit(transformed_filter.tensor<T, 4>()));
  Tensor transformed_output;
  - if (data_format == FORMAT_NHWC)
  + if (data_format == FORMAT_NHWC) {
  + // Only allocate temporary memory when a layout transformation is needed.
  OP_REQUIRES_OK(
  ctx, ctx->allocate_temp(DataTypeToEnum<T>::value,
  ShapeFromFormat(FORMAT_NCHW, out_batch,
  out_rows, out_cols, out_depths),
  &transformed_output));
  - else
  + } else {
  transformed_output = *output;
  + }
  auto input_ptr = AsDeviceMemory(input.template flat<T>().data(),
  input.template flat<T>().size());
  