batman-adv: use shorter pr_warn instead of pr_warning

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 8e74d97..f47299f 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -45,8 +45,8 @@
 		goto send_skb_err;
 
 	if (!(hard_iface->net_dev->flags & IFF_UP)) {
-		pr_warning("Interface %s is not up - can't send packet via that interface!\n",
-			   hard_iface->net_dev->name);
+		pr_warn("Interface %s is not up - can't send packet via that interface!\n",
+			hard_iface->net_dev->name);
 		goto send_skb_err;
 	}