net: remove ipv6_addr_copy()

C assignment can handle struct in6_addr copying.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c
index 9e63b43..3ecade3 100644
--- a/net/netfilter/xt_TCPMSS.c
+++ b/net/netfilter/xt_TCPMSS.c
@@ -161,7 +161,7 @@
 		struct flowi6 *fl6 = &fl.u.ip6;
 
 		memset(fl6, 0, sizeof(*fl6));
-		ipv6_addr_copy(&fl6->daddr, &ipv6_hdr(skb)->saddr);
+		fl6->daddr = ipv6_hdr(skb)->saddr;
 	}
 	rcu_read_lock();
 	ai = nf_get_afinfo(family);