[IPV6]: Fix powerpc allmodconfig build warnings.

Introduced by changeset 95e41e93e18d8e1e272ce23d96bae4f17ce11d42
("[IPV6]: Make ndisc_flow_init() common for later use.")

Reported by Stephen Rothwell.

In file included from net/ipv6/netfilter/ip6_tables.c:21:
include/linux/icmpv6.h:192: warning: 'struct in6_addr' declared inside parameter list
include/linux/icmpv6.h:192: warning: its scope is only this definition or declaration, which is probably not what you want

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h
index e4d4300d768f..03067443198a 100644
--- a/include/linux/icmpv6.h
+++ b/include/linux/icmpv6.h
@@ -184,6 +184,7 @@ extern void				icmpv6_param_prob(struct sk_buff *skb,
                                                           int code, int pos);
 
 struct flowi;
+struct in6_addr;
 extern void                             icmpv6_flow_init(struct sock *sk,
                                                          struct flowi *fl,
                                                          u8 type,