Comment 2 for bug 1153138

StacktraceTop:
 __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f86e0107860 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:199
 malloc_printerr (action=3, str=0x7f86e0107bd8 "munmap_chunk(): invalid pointer", ptr=<optimized out>) at malloc.c:4902
 gtk_file_system_model_finalize (object=0x7f86e5c2c3c0) at /build/buildd/gtk+2.0-2.24.16/gtk/gtkfilesystemmodel.c:1003
 g_object_unref (_object=0x7f86e5c2c3c0) at /build/buildd/glib2.0-2.35.8/./gobject/gobject.c:3024
 stop_loading_and_clear_list_model (impl=0x7f86e5c1e0f0, remove_from_treeview=0) at /build/buildd/gtk+2.0-2.24.16/gtk/gtkfilechooserdefault.c:6506