Function addUnknownChunks

depends/lodepng/lodepng.cpp:5783–5791

#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
static unsigned addUnknownChunks(ucvector* out, unsigned char* data, size_t datasize) {
  unsigned char* inchunk = data;
  while((size_t)(inchunk - data) < datasize) {
    CERROR_TRY_RETURN(lodepng_chunk_append(&out->data, &out->size, inchunk));
    out->allocsize = out->size; /*fix the allocsize again*/
    inchunk = lodepng_chunk_next(inchunk, data + datasize);
  }
  return 0;
}

static unsigned isGrayICCProfile(const unsigned char* profile, unsigned size) {
  /*