Made single-player server start on random unused port

Former-commit-id: 95ec85b9be58d0fd348144c398004a69676eb6cd

voxygen/src/menu/main/mod.rs

@@ -102,6 +102,7 @@ impl PlayState for MainMenuState {
                         client_init = client_init.or(Some(ClientInit::new(
                             (server_address, DEFAULT_PORT, false),
                             (comp::Player::new(username.clone()), 300),
+                            false,
                         )));
                     }
                     MainMenuEvent::StartSingleplayer => {