message: Fix MSAN errors in depthwise convolution test
diff: @@ -31,7 +31,8 @@ namespace xla {
  string GetFloatDataType(bool use_bfloat16);
  struct DepthwiseConvolution2DSpec {
  - int64 output_feature, window, stride, pad, lhs_dilate;
  + int64 output_feature = -1, window = -1, stride = -1, pad = -1,
  + lhs_dilate = -1;
  std::vector<int64> activation_dims;
  std::vector<int64> activation_layout;
  std::vector<int64> kernel_dims;
  