witness_lock_order_get
data = witness_lock_order_get(&t->t_w1, &t->t_w2);
data = witness_lock_order_get(w, w1);
data1 = witness_lock_order_get(w1, w2);
data2 = witness_lock_order_get(w2, w1);
static struct witness_lock_order_data *witness_lock_order_get(