Merge small part of r4215: Charge sessions when herding

In 2.0.5 we default to lingering for a bit which can cause sessions to
not be charged for a long time.  This fixes it.



git-svn-id: http://www.varnish-cache.org/svn/branches/2.0@4398 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_center.c

@@ -105,6 +105,7 @@ cnt_wait(struct sess *sp)
 			if (i == 0) {
 				WSL(sp->wrk, SLT_Debug, sp->fd, "herding");
 				VSL_stats->sess_herd++;
+				SES_Charge(sp);
 				sp->wrk = NULL;
 				vca_return_session(sp);
 				return (1);