message: indexcodec: Use C-style includes
diff: // This file is part of meshoptimizer library; see meshoptimizer.h for version/license details
  #include "meshoptimizer.h"
  -#include <cassert>
  -#include <cstring>
  +#include <assert.h>
  +#include <string.h>
  // This work is based on:
  // Fabian Giesen. Simple lossless index buffer compression & follow-up. 2013
  