message: Fix Heap-buffer-overflow READ in opj_jp2_apply_pclr
  The read overflow triggered by reading `src[j]` in
  ```cpp
  for (j = 0; j < max; ++j) {
  dst[j] = src[j];
  }
  ```
  The max is calculated as `new_comps[pcol].w * new_comps[pcol].h`, however the `src = old_comps[cmp].data;` which may have different `w` and `h` dimensions.
diff: @@ -1108,7 +1108,7 @@ static OPJ_BOOL opj_jp2_apply_pclr(opj_image_t *image,
  pcol = cmap[i].pcol;
  src = old_comps[cmp].data;
  assert(src); /* verified above */
  - max = new_comps[pcol].w * new_comps[pcol].h;
  + max = new_comps[i].w * new_comps[i].h;
  /* Direct use: */
  if (cmap[i].mtyp == 0) {
  