sctp: fix checkpatch errors with //commen

Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 2df5564..adc5e37 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3924,7 +3924,7 @@
 	 */
 	sp->hbinterval  = net->sctp.hb_interval;
 	sp->pathmaxrxt  = net->sctp.max_retrans_path;
-	sp->pathmtu     = 0; // allow default discovery
+	sp->pathmtu     = 0; /* allow default discovery */
 	sp->sackdelay   = net->sctp.sack_timeout;
 	sp->sackfreq	= 2;
 	sp->param_flags = SPP_HB_ENABLE |