Assertion failed when clicking on "Solo game" (main menu)

[auriamg]

I did a race, cancelled, went back to the main menu, and got an assertion failure upon clicking on "Solo game"

In FocusDispatcher::setRootID: assert(reservedID != -1); -> I got reservedID == 100

supertuxkart.exe!FocusDispatcher::setRootID(const int reservedID) Line 94 C++ supertuxkart.exe!KartSelectionScreen::init() Line 946 C++ supertuxkart.exe!GUIEngine::AbstractStateManager::pushScreen(GUIEngine::Screen * screen) Line 132 C++ supertuxkart.exe!MainMenuScreen::eventCallback(GUIEngine::Widget * widget, const std::basic_string<char,std::char_traits,std::allocator > & name, const int playerID) Line 278 C++ supertuxkart.exe!GUIEngine::EventHandler::sendEventToUser(GUIEngine::Widget * widget, std::basic_string<char,std::char_traits,std::allocator > & name, const int playerID) Line 617 C++ supertuxkart.exe!GUIEngine::EventHandler::onWidgetActivated(GUIEngine::Widget * w, const int playerID) Line 660 C++ supertuxkart.exe!GUIEngine::EventHandler::onGUIEvent(const irr::SEvent & event) Line 702 C++ supertuxkart.exe!GUIEngine::EventHandler::OnEvent(const irr::SEvent & event) Line 143 C++ supertuxkart.exe!irr::gui::CGUIEnvironment::OnEvent(const irr::SEvent & event) Line 399 C++ supertuxkart.exe!irr::gui::CGUIButton::OnEvent(const irr::SEvent & event) Line 225 C++ supertuxkart.exe!irr::gui::CGUIButton::OnEvent(const irr::SEvent & event) Line 215 C++ supertuxkart.exe!irr::gui::CGUIEnvironment::postEventFromUser(const irr::SEvent & event) Line 570 C++ supertuxkart.exe!irr::CIrrDeviceStub::postEventFromUser(const irr::SEvent & event) Line 220 C++ supertuxkart.exe!WndProc(HWND__ * hWnd, unsigned int message, unsigned int wParam, long lParam) Line 728 C++

Migrated-From: https://sourceforge.net/apps/trac/supertuxkart/t/ticket/1127