message: vertexcodec: Fix MSVC /W4 warnings
  Apparently vertexcodec.cpp wasn't added to CMakeLists.txt which is why
  this hasn't been an issue...
diff: @@ -454,9 +454,9 @@ static unsigned char* encodeVertexBlock(unsigned char* data, const unsigned char
  if (prediction && prediction[i])
  {
  - unsigned char pa = prediction[i] >> 16;
  - unsigned char pb = prediction[i] >> 8;
  - unsigned char pc = prediction[i] >> 0;
  + int pa = (prediction[i] >> 16) & 0xff;
  + int pb = (prediction[i] >> 8) & 0xff;
  + int pc = (prediction[i] >> 0) & 0xff;
  assert(pa > 0 && pb > 0 && pc > 0);
  if (pa <= i && pb <= i && pc <= i)
  @@ -529,9 +529,9 @@ static const unsigned char* decodeVertexBlock(const unsigned char* data, const u
  if (prediction && prediction[i])
  {
  - unsigned char pa = prediction[i] >> 16;
  - unsigned char pb = prediction[i] >> 8;
  - unsigned char pc = prediction[i] >> 0;
  + int pa = (prediction[i] >> 16) & 0xff;
  + int pb = (prediction[i] >> 8) & 0xff;
  + int pc = (prediction[i] >> 0) & 0xff;
  assert(pa > 0 && pb > 0 && pc > 0);
  if (pa <= i && pb <= i && pc <= i)
  @@ -828,6 +828,7 @@ size_t meshopt_encodeVertexBuffer(unsigned char* buffer, size_t buffer_size, con
  #endif
  assert(size_t(data - buffer) <= buffer_size);
  + (void)buffer_size;
  return data - buffer;
  }
  