IPSEC: remove unecessary pass by reference of sequence number

Change-Id: Id406eb8c69a89c57305d8f138e8e6730037aa799
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/ipsec/ipsec_sa.h b/src/vnet/ipsec/ipsec_sa.h
index 661b54a..e09b539 100644
--- a/src/vnet/ipsec/ipsec_sa.h
+++ b/src/vnet/ipsec/ipsec_sa.h
@@ -297,13 +297,13 @@
 }
 
 always_inline void
-ipsec_sa_anti_replay_advance (ipsec_sa_t * sa, u32 * seqp)
+ipsec_sa_anti_replay_advance (ipsec_sa_t * sa, u32 seqp)
 {
   u32 pos, seq;
   if (PREDICT_TRUE (sa->flags & IPSEC_SA_FLAG_USE_ANTI_REPLAY) == 0)
     return;
 
-  seq = clib_host_to_net_u32 (*seqp);
+  seq = clib_host_to_net_u32 (seqp);
   if (PREDICT_TRUE (sa->flags & IPSEC_SA_FLAG_USE_ESN))
     {
       int wrap = sa->seq_hi - sa->last_seq_hi;