message: Prevent OOMs in too large JPG multi-channel images.
diff: @@ -157,7 +157,8 @@ uint8* UncompressLow(const void* srcdata, FewerArgsForCompiler* argball) {
  jpeg_calc_output_dimensions(&cinfo);
  int64 total_size = static_cast<int64>(cinfo.output_height) *
  - static_cast<int64>(cinfo.output_width);
  + static_cast<int64>(cinfo.output_width) *
  + static_cast<int64>(cinfo.num_components);
  // Some of the internal routines do not gracefully handle ridiculously
  // large images, so fail fast.
  if (cinfo.output_width <= 0 || cinfo.output_height <= 0) {
  