[PATCH net] sit: ipip6_valid_ip_proto() is static

From: Eric Dumazet <edumazet@google.com>

Fixes this sparse error :
net/ipv6/sit.c:1129:6: warning: symbol 'ipip6_valid_ip_proto' was not
declared. Should it be static?


Fixes: 49dbe7ae2168b ("sit: support MPLS over IPv4")
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 net/ipv6/sit.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 182b6a9be29d..d6da9febb12d 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c

@@ -1126,7 +1126,7 @@ static int ipip6_tunnel_update_6rd(struct ip_tunnel *t,
 }
 #endif
 
-bool ipip6_valid_ip_proto(u8 ipproto)
+static bool ipip6_valid_ip_proto(u8 ipproto)
 {
 	return ipproto == IPPROTO_IPV6 ||
 		ipproto == IPPROTO_IPIP ||