Comment 2 for bug 1196915

StacktraceTop:
 lightdm_layout_get_description (layout=0x1d3fc60) at layout.c:241
 menu_bar_cmp_layout (b=0x1d3dea0, a=<optimized out>) at menubar.c:1075
 _menu_bar_cmp_layout_gcompare_func (a=<optimized out>, b=0x1d3dea0) at menubar.c:1593
 g_list_sort_merge (user_data=0x0, compare_func=0x41ddd0 <_menu_bar_cmp_layout_gcompare_func>, l2=0x1a42000, l1=0x1a8eb80) at /build/buildd/glib2.0-2.37.3/./glib/glist.c:1066
 g_list_sort_real (list=<optimized out>, compare_func=compare_func@entry=0x41ddd0 <_menu_bar_cmp_layout_gcompare_func>, user_data=user_data@entry=0x0) at /build/buildd/glib2.0-2.37.3/./glib/glist.c:1112