This patch makes the needlessly global icmp_sk_init() static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>

---
d163a44e24881d5e960bf9bdc1819ba8ccd15555 diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index f064031..fee171e 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -1144,7 +1144,7 @@ static void __net_exit icmp_sk_exit(struct net *net)
 	net->ipv4.icmp_sk = NULL;
 }
 
-int __net_init icmp_sk_init(struct net *net)
+static int __net_init icmp_sk_init(struct net *net)
 {
 	int i, err;
 
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