sched: Cleanup duplicate local variable in [enqueue|dequeue]_task_fair

No need to define a new "cfs_rq" variable in the "for" block.
Just use the one at the top of the function.
Signed-off-by: NLin Ming <ming.m.lin@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1311297271.3938.1352.camel@minggr.sh.intel.comSigned-off-by: NIngo Molnar <mingo@elte.hu>

kernel/sched_fair.c

@@ -1317,7 +1317,7 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags)
 	}
 
 	for_each_sched_entity(se) {
-		struct cfs_rq *cfs_rq = cfs_rq_of(se);
+		cfs_rq = cfs_rq_of(se);
 
 		update_cfs_load(cfs_rq, 0);
 		update_cfs_shares(cfs_rq);
@@ -1360,7 +1360,7 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags)
 	}
 
 	for_each_sched_entity(se) {
-		struct cfs_rq *cfs_rq = cfs_rq_of(se);
+		cfs_rq = cfs_rq_of(se);
 
 		update_cfs_load(cfs_rq, 0);
 		update_cfs_shares(cfs_rq);