Constructor member initializer issue

[jonesmz]

    connack_message(
        bool session_present,
        std::uint8_t reason_code,
        properties props
    )
        : fixed_header_(make_fixed_header(control_packet_type::connack, 0b0000)),
          remaining_length_(
              1 + // connect acknowledge flags
              1   // reason code
          ),
          connect_acknowledge_flags_(session_present ? 1 : 0),
          reason_code_(reason_code),
          property_length_(
              std::accumulate(
                  props.begin(),
                  props.end(),
                  0U,
                  [](std::size_t total, property_variant const& pv) {
                      return total + v5::size(pv);
                  }
              )
          ),
          props_(std::move(props)),
          num_of_const_buffer_sequence_(
              1 +                   // fixed header
              1 +                   // remaining length
              1 +                   // connect acknowledge flags
              1 +                   // reason code
              1 +                   // property length
              std::accumulate(
                  props.begin(),
                  props.end(),
                  0U,
                  [](std::size_t total, property_variant const& pv) {
                      return total + v5::num_of_const_buffer_sequence(pv);
                  }
              )
          )

Note the use of props.begin() and props.end() after props_(std::move(props))