[PATCH] typo in new class_device_release

There is a typo in the current 2.5.70 bk version of class_device_release that
was not there in my original patch.  By confusing the class and the class_device,
the release function oops.  cd->release is always the function itself (class_device_release),
cls->release is the one setup for the class (net_class in my case).

drivers/base/class.c

@@ -191,7 +191,7 @@ static void class_dev_release(struct kobject * kobj)
 	pr_debug("device class '%s': release.\n",cd->class_id);
 
 	if (cls->release)
-		cd->release(cd);
+		cls->release(cd);
 }
 
 static struct kobj_type ktype_class_device = {