Close program when Wayland connection hangs up

This change ensures that SuperTuxKart will not keep running in the
background when the compositor crashes and doesn't close the STK
main window.

lib/irrlicht/source/Irrlicht/CIrrDeviceWayland.cpp

@@ -1283,7 +1283,10 @@ bool CIrrDeviceWayland::run()
 {
     os::Timer::tick();
 
-    wl_display_dispatch_pending(m_display);
+    if (wl_display_dispatch_pending(m_display) == -1)
+    {
+	closeDevice();
+    }
 
     for (unsigned int i = 0; i < m_events.size(); i++)
     {