message: Fix FusedConv2DBiasActivationOp for OIHW filter format.
  The 'filter' variable wasn't initialized for OIHW filter format.
diff: @@ -445,11 +445,11 @@ void LaunchFusedConv2DBiasActivationOp<GPUDevice, T, BiasType, ScaleType>::
  .set_zero_padding_width(padding_cols / 2);
  Tensor maybe_transformed_filter;
  - const Tensor* filter;
  - if (is_int8x4) {
  - // We have already checked filter is OIHW_VECT_I in the constructor.
  - filter = &filter_param;
  - } else if (filter_format == FORMAT_HWIO) {
  + const Tensor* filter = &filter_param;
  + // For qint8, we have already checked filter is OIHW_VECT_I in the
  + // constructor, but we need to test for is_int8x4 so the if block doesn't
  + // generate code for qint8.
  + if (!is_int8x4 && filter_format == FORMAT_HWIO) {
  // Shuffle filter tensor from HWIO to OIHW:
  OP_REQUIRES_OK(ctx, ctx->allocate_temp(
  DataTypeToEnum<T>::value,
  