message: Fix wrong call to b_timestamp ctor
diff: @@ -224,7 +224,7 @@ types::b_timestamp element::get_timestamp() const {
  uint32_t increment;
  bson_iter_timestamp(&iter, &timestamp, &increment);
  - return types::b_timestamp{timestamp, increment};
  + return types::b_timestamp{increment, timestamp};
  }
  types::b_minkey element::get_minkey() const {
  