[PATCH 2.6.16-mm1] __mod_timer: simplify ->base changing

[Oleg Nesterov <oleg@tv-sign.ru>]

On top of
	kill-__init_timer_base-in-favor-of-boot_tvec_bases.patch

Since base and new_base are of the same type now, we can save one
'if' branch and simplify the code a bit.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>

--- MM/kernel/timer.c~	2006-03-25 18:44:18.000000000 +0300
+++ MM/kernel/timer.c	2006-03-25 18:50:07.000000000 +0300
@@ -215,21 +215,19 @@ int __mod_timer(struct timer_list *timer
 		 * handler yet has not finished. This also guarantees that
 		 * the timer is serialized wrt itself.
 		 */
-		if (unlikely(base->running_timer == timer)) {
-			/* The timer remains on a former base */
-			new_base = base;
-		} else {
+		if (likely(base->running_timer != timer)) {
 			/* See the comment in lock_timer_base() */
 			timer->base = NULL;
 			spin_unlock(&base->lock);
-			spin_lock(&new_base->lock);
-			timer->base = new_base;
+			base = new_base;
+			spin_lock(&base->lock);
+			timer->base = base;
 		}
 	}
 
 	timer->expires = expires;
-	internal_add_timer(new_base, timer);
-	spin_unlock_irqrestore(&new_base->lock, flags);
+	internal_add_timer(base, timer);
+	spin_unlock_irqrestore(&base->lock, flags);
 
 	return ret;
 }