Comment 2 for bug 1304204

StacktraceTop:
 find_root (node=0x22) at /build/buildd/glib2.0-2.40.0/./glib/gsequence.c:1557
 node_get_last (node=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gsequence.c:1591
 get_sequence (node=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gsequence.c:175
 g_sequence_iter_get_sequence (iter=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gsequence.c:1166
 IA__gtk_list_store_remove (list_store=0x7f9e35306c80, iter=iter@entry=0x7fff35edfce0) at /build/buildd/gtk+2.0-2.24.23/gtk/gtkliststore.c:964