mm: fix typo in refill_stock() comment

Change refill_stock() comment: s/consumt_stock()/consume_stock()/
Signed-off-by: Greg Thelen <gthelen@google.com>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

mm/memcontrol.c

@@ -1435,7 +1435,7 @@ static void drain_local_stock(struct work_struct *dummy)
 
 /*
  * Cache charges(val) which is from res_counter, to local per_cpu area.
- * This will be consumed by consumt_stock() function, later.
+ * This will be consumed by consume_stock() function, later.
  */
 static void refill_stock(struct mem_cgroup *mem, int val)
 {