[PATCH net-next] netfilter: missing #include for nf_ct_frag6_gather declaration

[Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>]

In file included from net/netfilter/utils.c:5:
include/linux/netfilter_ipv6.h: In function 'nf_ipv6_br_defrag':
include/linux/netfilter_ipv6.h:110:9: error: implicit declaration of function 'nf_ct_frag6_gather'; did you mean 'nf_ct_attach'? [-Werror=implicit-function-declaration]
  return nf_ct_frag6_gather(net, skb, user);
         ^~~~~~~~~~~~~~~~~~

Fixes: 764dd163ac92 ("netfilter: nf_conntrack_bridge: add support for IPv6")
Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
 include/linux/netfilter_ipv6.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/netfilter_ipv6.h b/include/linux/netfilter_ipv6.h
index a21b8c9623ee..3a3dc4b1f0e7 100644
--- a/include/linux/netfilter_ipv6.h
+++ b/include/linux/netfilter_ipv6.h
@@ -96,6 +96,8 @@ static inline int nf_ip6_route(struct net *net, struct dst_entry **dst,
 #endif
 }
 
+#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
+
 static inline int nf_ipv6_br_defrag(struct net *net, struct sk_buff *skb,
 				    u32 user)
 {
-- 
2.11.0