Do not clear address in main menu if starting a singleplayer game by double clicking the world

src/guiMainMenu.cpp

@@ -868,6 +868,7 @@ bool GUIMainMenu::OnEvent(const SEvent& event)
 			{
 			case GUI_ID_WORLD_LISTBOX:
 				acceptInput();
+				if(getTab() != TAB_SINGLEPLAYER)
 					m_data->address = L""; // Force local game
 				quitMenu();
 				return true;