[IPSEC]: Fix warnings with casting int to pointer

This patch adds some casts to shut up the warnings introduced by my
last patch that added a common interator function for xfrm algorightms.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/xfrm/xfrm_algo.c

@@ -407,27 +407,27 @@ static struct xfrm_algo_desc *xfrm_find_algo(
 static int xfrm_alg_id_match(const struct xfrm_algo_desc *entry,
 			     const void *data)
 {
-	return entry->desc.sadb_alg_id == (int)data;
+	return entry->desc.sadb_alg_id == (unsigned long)data;
 }
 
 struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id)
 {
 	return xfrm_find_algo(&xfrm_aalg_list, xfrm_alg_id_match,
-			      (void *)alg_id, 1);
+			      (void *)(unsigned long)alg_id, 1);
 }
 EXPORT_SYMBOL_GPL(xfrm_aalg_get_byid);
 
 struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id)
 {
 	return xfrm_find_algo(&xfrm_ealg_list, xfrm_alg_id_match,
-			      (void *)alg_id, 1);
+			      (void *)(unsigned long)alg_id, 1);
 }
 EXPORT_SYMBOL_GPL(xfrm_ealg_get_byid);
 
 struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id)
 {
 	return xfrm_find_algo(&xfrm_calg_list, xfrm_alg_id_match,
-			      (void *)alg_id, 1);
+			      (void *)(unsigned long)alg_id, 1);
 }
 EXPORT_SYMBOL_GPL(xfrm_calg_get_byid);