message: Fix NV21 -> RGBA conversion bug.
diff: @@ -154,7 +154,7 @@ absl::Status ConvertFromNv21(const FrameBuffer& buffer,
  // The libyuv ABGR format is interleaved RGBA format in memory.
  int ret = libyuv::NV21ToABGR(
  yuv_data.y_buffer, yuv_data.y_row_stride, yuv_data.v_buffer,
  - yuv_data.uv_pixel_stride,
  + yuv_data.uv_row_stride,
  const_cast<uint8*>(output_buffer->plane(0).buffer),
  output_buffer->plane(0).stride.row_stride_bytes,
  buffer.dimension().width, buffer.dimension().height);
  