[NET_SCHED]: Use NLA_PUT_STRING for string dumping

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 5584e7c..3377ca0 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -337,7 +337,7 @@
 	tcm->tcm_ifindex = tp->q->dev->ifindex;
 	tcm->tcm_parent = tp->classid;
 	tcm->tcm_info = TC_H_MAKE(tp->prio, tp->protocol);
-	NLA_PUT(skb, TCA_KIND, IFNAMSIZ, tp->ops->kind);
+	NLA_PUT_STRING(skb, TCA_KIND, tp->ops->kind);
 	tcm->tcm_handle = fh;
 	if (RTM_DELTFILTER != event) {
 		tcm->tcm_handle = 0;