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: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/probe.c

@@ -122,7 +122,7 @@ static const struct file_operations sctpprobe_fops = {
 	.llseek = noop_llseek,
 };
 
-sctp_disposition_t jsctp_sf_eat_sack(struct net *net,
+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,