message: Combine is no longer destructive, so we need to update this
diff: @@ -172,8 +172,6 @@ void PerfectAggregateHashTable::Combine(PerfectAggregateHashTable &other) {
  target_ptr += tuple_size;
  }
  Combine(source_addresses, target_addresses, combine_count);
  - // disable finalizers in the other HT
  - other.total_groups = 0;
  }
  template<class T>
  