sched: Fix __sched_period comment

It should be sched_nr_latency so fix it before it annoys me more.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1344435364-18632-1-git-send-email-bp@amd64.orgSigned-off-by: Thomas Gleixner <tglx@linutronix.de>

kernel/sched/fair.c

@@ -597,7 +597,7 @@ calc_delta_fair(unsigned long delta, struct sched_entity *se)
 /*
  * The idea is to set a period in which each task runs once.
  *
- * When there are too many tasks (sysctl_sched_nr_latency) we have to stretch
+ * When there are too many tasks (sched_nr_latency) we have to stretch
  * this period because otherwise the slices get too small.
  *
  * p = (nr <= nl) ? l : l*nr/nl