Fixed compilation with libtorrent 0.15.x

src/qtlibtorrent/qbtsession.cpp

@@ -477,9 +477,9 @@ void QBtSession::configureSession() {
     sessionSettings.mixed_mode_algorithm = session_settings::prefer_tcp;
   else
     sessionSettings.mixed_mode_algorithm = session_settings::peer_proportional;
-#endif
   sessionSettings.seed_choking_algorithm = session_settings::fastest_upload;
   sessionSettings.connection_speed = 20; //default is 10
+#endif
   qDebug() << "Settings SessionSettings";
   setSessionSettings(sessionSettings);
   // Bittorrent