ipv4: compat_ioctl is local to af_inet.c, make it static

ipv4: compat_ioctl is local to af_inet.c, make it static

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index dd2b947..1b5096a 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -893,7 +893,7 @@
 EXPORT_SYMBOL(inet_ioctl);
 
 #ifdef CONFIG_COMPAT
-int inet_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+static int inet_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 {
 	struct sock *sk = sock->sk;
 	int err = -ENOIOCTLCMD;