message: gltfpack: Fix a possible OOB access in reindexMesh
  We were incorrectly initializing remap with index_count elements; in
  theory, index_count can be smaller than vertex_count if an index buffer
  indexes a small slice in a larger shared accessor.
diff: @@ -576,7 +576,7 @@ void reindexMesh(Mesh& mesh)
  streams.push_back(stream);
  }
  - std::vector<unsigned int> remap(total_indices);
  + std::vector<unsigned int> remap(total_vertices);
  size_t unique_vertices = meshopt_generateVertexRemapMulti(&remap[0], &mesh.indices[0], total_indices, total_vertices, &streams[0], streams.size());
  assert(unique_vertices <= total_vertices);
  