Comment 2 for bug 1054753

StacktraceTop:
 g_pointer_bit_lock (address=address@entry=0x9b7b640, lock_bit=lock_bit@entry=2) at /build/buildd/glib2.0-2.33.14/./glib/gbitlock.c:398
 g_datalist_lock (datalist=0x9b7b640) at /build/buildd/glib2.0-2.33.14/./glib/gdataset.c:213
 g_datalist_id_dup_data (datalist=datalist@entry=0x9b7b640, key_id=key_id@entry=54, dup_func=dup_func@entry=0, user_data=user_data@entry=0x0) at /build/buildd/glib2.0-2.33.14/./glib/gdataset.c:854
 g_datalist_id_get_data (datalist=datalist@entry=0x9b7b640, key_id=54) at /build/buildd/glib2.0-2.33.14/./glib/gdataset.c:798
 g_object_unref (_object=0x9b7b638) at /build/buildd/glib2.0-2.33.14/./gobject/gobject.c:2953