[PATCH 2.{4,5}.x] mod_timer fxi for sch_csz.c

[Vinay K Nallamothu]

sch_csz.c: trivial {del,add}_timer to mod_timer conversion.

--- linux-2.5.68/net/sched/sch_csz.c	2003-04-21 10:14:44.000000000 +0530
+++ linux-2.5.68-nvk/net/sched/sch_csz.c	2003-05-03 14:40:11.000000000 +0530
@@ -708,11 +708,9 @@
 	 */
 	if (q->wd_expires) {
 		unsigned long delay = PSCHED_US2JIFFIE(q->wd_expires);
-		del_timer(&q->wd_timer);
 		if (delay == 0)
 			delay = 1;
-		q->wd_timer.expires = jiffies + delay;
-		add_timer(&q->wd_timer);
+		mod_timer(&q->wd_timer, jiffies + delay);
 		sch->stats.overlimits++;
 	}
 #endif