Comment 2 for bug 929043

StacktraceTop:
 g_array_insert_vals (farray=0x2fc51a0, index_=178, data=0x7f10a5e49860, len=1) at /usr/include/x86_64-linux-gnu/bits/string3.h:58
 gtk_tree_model_sort_insert_value (s_iter=0x7f10a5e498c0, s_path=0x7f10b80a5e50, level=0x7f10b804a830, tree_model_sort=0x2d8ea30) at /build/buildd/gtk+2.0-2.24.6/gtk/gtktreemodelsort.c:581
 gtk_tree_model_sort_row_inserted (s_model=<optimized out>, s_path=0x7f10b80a5e50, s_iter=<optimized out>, data=0x2d8ea30) at /build/buildd/gtk+2.0-2.24.6/gtk/gtktreemodelsort.c:674
 g_closure_invoke (closure=0x7f10b80305c0, return_value=0x0, n_param_values=3, param_values=0x2692230, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
 signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x2732da0, emission_return=0x0, instance_and_params=0x2692230) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3272