message: minor index type fix
diff: @@ -92,8 +92,8 @@ void prefix_sum(std::shared_ptr<const OmpExecutor> exec,
  counts[0] = 0;
  - const int levels = static_cast<IndexType>(std::ceil(std::log(nthreads)));
  - for (IndexType ilvl = 0; ilvl < levels; ilvl++) {
  + const auto levels = static_cast<int>(std::ceil(std::log(nthreads)));
  + for (int ilvl = 0; ilvl < levels; ilvl++) {
  const IndexType factor = power(2, (ilvl + 1));
  const IndexType lvl_num_witems = factor * def_num_witems;
  const int ntasks = (nthreads - 1) / factor + 1;
  