fix build with DHT disabled

include/libtorrent/aux_/session_impl.hpp

@@ -509,6 +509,10 @@ namespace libtorrent
 			// port we'll bind the next outgoing socket to
 			int m_next_port;
 
+			// the sequence number to assign to the
+			// next torrent that's added
+			int m_torrent_sequence;
+
 #ifndef TORRENT_DISABLE_DHT
 			boost::intrusive_ptr<dht::dht_tracker> m_dht;
 			dht_settings m_dht_settings;
@@ -522,10 +526,6 @@ namespace libtorrent
 			// but for the udp port used by the DHT.
 			int m_external_udp_port;
 
-			// the sequence number to assign to the
-			// next torrent that's added
-			int m_torrent_sequence;
-
 			udp_socket m_dht_socket;
 
 			void on_receive_udp(asio::error_code const& e

src/session_impl.cpp

@@ -164,10 +164,10 @@ namespace aux {
 		, m_disconnect_time_scaler(90)
 		, m_incoming_connection(false)
 		, m_last_tick(time_now())
+		, m_torrent_sequence(0)
 #ifndef TORRENT_DISABLE_DHT
 		, m_dht_same_port(true)
 		, m_external_udp_port(0)
-		, m_torrent_sequence(0)
 		, m_dht_socket(m_io_service, bind(&session_impl::on_receive_udp, this, _1, _2, _3, _4)
 			, m_half_open)
 #endif