Fixes the following warning. Althrough the warning looks bogus.

net/sched/sch_generic.c: In function ‘dev_watchdog’:
net/sched/sch_generic.c:256: warning: unused variable ‘drivername’


Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
---

--- linus-rc8/net/sched/sch_generic.c	2010-10-20 16:44:10.000000000 +0600
+++ rakib-rc8/net/sched/sch_generic.c	2010-10-20 16:44:51.000000000 +0600
@@ -253,7 +253,7 @@ static void dev_watchdog(unsigned long a
 			}

 			if (some_queue_timedout) {
-				char drivername[64];
+				char drivername[64] __maybe_unused;
 				WARN_ONCE(1, KERN_INFO "NETDEV WATCHDOG: %s (%s): transmit queue
%u timed out\n",
 				       dev->name, netdev_drivername(dev, drivername, 64), i);
 				dev->netdev_ops->ndo_tx_timeout(dev);
--
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