Comment 2 for bug 1373069

StacktraceTop:
 XPending (dpy=0x2464800) at ../../src/Pending.c:55
 gdk_check_xpending (display=0x2471050) at /build/buildd/gtk+3.0-3.12.2/./gdk/x11/gdkeventsource.c:266
 gdk_event_source_prepare (source=<optimized out>, timeout=timeout@entry=0x7fffd246a334) at /build/buildd/gtk+3.0-3.12.2/./gdk/x11/gdkeventsource.c:284
 g_main_context_prepare (context=context@entry=0x244b920, priority=priority@entry=0x7fffd246a3c0) at /build/buildd/glib2.0-2.41.5/./glib/gmain.c:3352
 g_main_context_iterate (context=context@entry=0x244b920, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.41.5/./glib/gmain.c:3714