message: Fix compiler warning due to mixed enum and size_t return values.
diff: @@ -219,7 +219,7 @@ size_t IndexArray::index_string(StringData value, IntegerColumn& result, Interna
  // result_ref.result with the results in the bounds start_ndx, and end_ndx
  constexpr bool allnocopy(method == index_FindAll_nocopy);
  - constexpr size_t local_not_found = (allnocopy || all) ? FindRes_not_found : first ? not_found : 0;
  + constexpr size_t local_not_found = (allnocopy || all) ? size_t(FindRes_not_found) : first ? not_found : 0;
  const char* data = m_data;
  const char* header;
  