[LLC]: Use some more likely/unlikely

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
diff --git a/net/llc/llc_output.c b/net/llc/llc_output.c
index ab5784c..b4d55b6 100644
--- a/net/llc/llc_output.c
+++ b/net/llc/llc_output.c
@@ -98,7 +98,7 @@
 			    dsap, LLC_PDU_CMD);
 	llc_pdu_init_as_ui_cmd(skb);
 	rc = llc_mac_hdr_init(skb, skb->dev->dev_addr, dmac);
-	if (!rc)
+	if (likely(!rc))
 		rc = dev_queue_xmit(skb);
 	return rc;
 }