Cleaning up also the rte_same hook which is never set

int rte_better(rte *new, rte *old)

{ DUMMY; }

/**

 * rte_same - compare two routes

 * @e1: route

 * @e2: route

 *

 * The rte_same() hook tests whether the routes @e1 and @e2 belonging

 * to the same protocol instance have identical contents. Contents of

 * &rta, all the extended attributes and &rte preference are checked

 * by the core code, no need to take care of them here.

 *

 * Result: 1 if @e1 is identical to @e2, 0 otherwise.

 */

int rte_same(rte *e1, rte *e2)

{ DUMMY; }

/**

 * rte_insert - notify instance about route insertion

 * @n: network

   *

   *	   rte_recalculate Called at the beginning of the best route selection

   *	   rte_better	Compare two rte's and decide which one is better (1=first, 0=second).

   *       rte_same	Compare two rte's and decide whether they are identical (1=yes, 0=no).

   *       rte_mergable	Compare two rte's and decide whether they could be merged (1=yes, 0=no).

   *	   rte_insert	Called whenever a rte is inserted to a routing table.

   *	   rte_remove	Called whenever a rte is removed from the routing table.

  int (*rte_recalculate)(struct rtable *, struct network *, struct rte *, struct rte *, struct rte *);

  int (*rte_better)(struct rte *, struct rte *);

  int (*rte_same)(struct rte *, struct rte *);

  int (*rte_mergable)(struct rte *, struct rte *);

  struct rte * (*rte_modify)(struct rte *, struct linpool *);

  void (*rte_insert)(struct network *, struct rte *);

  /* rte.flags are not checked, as they are mostly internal to rtable */

  return

    x->attrs == y->attrs &&

    x->pflags == y->pflags &&

    (!x->attrs->src->proto->rte_same || x->attrs->src->proto->rte_same(x, y)) &&

    rte_is_filtered(x) == rte_is_filtered(y);

}