[TME] Crash after picking kart online

[kimden]

Version 2c87255

Steps I did to reproduce

1. Create server using ingame button
2. Set compounds to 7 15 24
3. Start the game
4. Pick the kart
5. Crash

Backtrace (Release build)

#0  0x00005c3548aba3ee in TracksScreen::beforeAddingWidget() ()
#1  0x00005c354847f8f2 in GUIEngine::switchToScreen(GUIEngine::Screen*) ()
#2  0x00005c3548475840 in GUIEngine::AbstractStateManager::pushMenu(GUIEngine::Screen*) ()
#3  0x00005c354847595a in GUIEngine::AbstractStateManager::pushScreen(GUIEngine::Screen*) ()
#4  0x00005c3548a4f502 in NetworkKartSelectionScreen::allPlayersDone() ()
#5  0x00005c3548a39eaa in KartSelectionScreen::playerConfirm(int) ()
#6  0x00005c3548a3f93b in KartSelectionScreen::eventCallback(GUIEngine::Widget*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int) ()
#7  0x00005c354848592b in GUIEngine::EventHandler::onWidgetActivated(GUIEngine::Widget*, int, Input::InputType) ()
#8  0x00005c35484861b5 in GUIEngine::EventHandler::OnEvent(irr::SEvent const&) ()
#9  0x00005c3548ce302b in irr::gui::CGUIButton::OnEvent(irr::SEvent const&) ()
#10 0x00005c3548de06fa in irr::gui::CGUIEnvironment::postEventFromUser(irr::SEvent const&) ()
#11 0x00005c3548cf301e in irr::CIrrDeviceStub::postEventFromUser(irr::SEvent const&) ()
#12 0x00005c3548cea893 in irr::CIrrDeviceSDL::run() ()
#13 0x00005c35486873b9 in MainLoop::run() ()
#14 0x00005c35481cbc87 in main ()

[Nomagno]

I can not reproduce, and do not have a working theory as to what could be causing the crash. Very strange