[LLC]: Help the compiler with likely/unlikely, saving some more bytes

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
diff --git a/net/llc/llc_input.c b/net/llc/llc_input.c
index 13b4624..60c1aca 100644
--- a/net/llc/llc_input.c
+++ b/net/llc/llc_input.c
@@ -101,7 +101,7 @@
 	u8 llc_len = 2;
 	struct llc_pdu_sn *pdu;
 
-	if (!pskb_may_pull(skb, sizeof(*pdu)))
+	if (unlikely(!pskb_may_pull(skb, sizeof(*pdu))))
 		return 0;
 
 	pdu = (struct llc_pdu_sn *)skb->data;