staging: lustre: fixed shadowed variable in socklnd_cb.c

Removed redundant declaration of variable 'tx' in local scope
Fixed: sparse warning:
socklnd_cb.c:2476:41: warning: symbol 'tx' shadows an earlier one
socklnd_cb.c:2435:25: originally declared here

Signed-off-by: Andrew Kanner <andrew.kanner@gmail.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c

@@ -2473,8 +2473,8 @@ ksocknal_check_peer_timeouts(int idx)
 		 * holding only shared lock
 		 */
 		if (!list_empty(&peer->ksnp_tx_queue)) {
-			struct ksock_tx *tx = list_entry(peer->ksnp_tx_queue.next,
-						    struct ksock_tx, tx_list);
+			tx = list_entry(peer->ksnp_tx_queue.next,
+					struct ksock_tx, tx_list);
 
 			if (cfs_time_aftereq(cfs_time_current(),
 					     tx->tx_deadline)) {