IPv6: use ipv6_addr_copy() in ip6_route_redirect()

Change ip6_route_redirect() to use ipv6_addr_copy().

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index d6fe764..df9432a 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1471,9 +1471,10 @@
 				},
 			},
 		},
-		.gateway = *gateway,
 	};
 
+	ipv6_addr_copy(&rdfl.gateway, gateway);
+
 	if (rt6_need_strict(dest))
 		flags |= RT6_LOOKUP_F_IFACE;