message: Quick fix to overflow issue in loop filtering.
diff: @@ -1790,6 +1790,7 @@ impl<R: Read> Vp8Decoder<R> {
  }
  }
  } else {
  + if luma_xlength > 3 {
  for x in (4usize..luma_xlength-3).step_by(4) {
  for y in 0..luma_ylength {
  let y0 = mby * 16 + y;
  @@ -1805,6 +1806,7 @@ impl<R: Read> Vp8Decoder<R> {
  );
  }
  }
  + }
  if chroma_xlength == 8 {
  for y in 0usize..chroma_ylength {
  @@ -1910,6 +1912,7 @@ impl<R: Read> Vp8Decoder<R> {
  }
  }
  } else {
  + if luma_ylength > 3 {
  for y in (4usize..luma_ylength-3).step_by(4) {
  for x in 0..luma_xlength {
  let y0 = mby * 16 + y;
  @@ -1925,6 +1928,7 @@ impl<R: Read> Vp8Decoder<R> {
  );
  }
  }
  + }
  if chroma_ylength == 8 {
  for x in 0..chroma_xlength {
  