net: sctp: minor: make jsctp_sf_eat_sack static

The function jsctp_sf_eat_sack can be made static, no need to extend
its visibility.
Signed-off-by: NDaniel Borkmann <dborkman@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/sctp/probe.c

@@ -122,12 +122,12 @@ static const struct file_operations sctpprobe_fops = {
 	.llseek = noop_llseek,
 };
 
-sctp_disposition_t jsctp_sf_eat_sack(struct net *net,
-				     const struct sctp_endpoint *ep,
-				     const struct sctp_association *asoc,
-				     const sctp_subtype_t type,
-				     void *arg,
-				     sctp_cmd_seq_t *commands)
+static sctp_disposition_t jsctp_sf_eat_sack(struct net *net,
+					    const struct sctp_endpoint *ep,
+					    const struct sctp_association *asoc,
+					    const sctp_subtype_t type,
+					    void *arg,
+					    sctp_cmd_seq_t *commands)
 {
 	struct sctp_transport *sp;
 	static __u32 lcwnd = 0;