drivers/net/usb/sierra_net.c: removes unnecessary semicolon

removes unnecessary semicolon

Found by Coccinelle: http://coccinelle.lip6.fr/

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/usb/sierra_net.c b/drivers/net/usb/sierra_net.c
index 7ae70e9..dfbdfe8 100644
--- a/drivers/net/usb/sierra_net.c
+++ b/drivers/net/usb/sierra_net.c
@@ -838,7 +838,7 @@
 				netdev_err(dev->net, "HIP/ETH: Invalid pkt\n");
 
 			dev->net->stats.rx_frame_errors++;
-			/* dev->net->stats.rx_errors incremented by caller */;
+			/* dev->net->stats.rx_errors incremented by caller */
 			return 0;
 		}