lcs: Add missing destroy_timer_on_stack()

Otherwise we leak a tracking object when DEBUG_OBJECTS is enabled.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

drivers/s390/net/lcs.c

@@ -899,6 +899,7 @@ lcs_send_lancmd(struct lcs_card *card, struct lcs_buffer *buffer,
 	add_timer(&timer);
 	wait_event(reply->wait_q, reply->received);
 	del_timer_sync(&timer);
+	destroy_timer_on_stack(&timer);
 	LCS_DBF_TEXT_(4, trace, "rc:%d",reply->rc);
 	rc = reply->rc;
 	lcs_put_reply(reply);