Comment 2 for bug 1270794

StacktraceTop:
 __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f133bc44440 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:199
 malloc_printerr (ptr=0x7f1352d5f370, str=0x7f133bc40405 "free(): invalid pointer", action=3) at malloc.c:4923
 _int_free (av=<optimized out>, p=0x7f1352d5f360, have_lock=0) at malloc.c:3779
 gtk_file_system_model_finalize (object=0x7f135296c310) at /build/buildd/gtk+2.0-2.24.17/gtk/gtkfilesystemmodel.c:1003
 g_object_unref (_object=0x7f135296c310) at /build/buildd/glib2.0-2.36.0/./gobject/gobject.c:3024