Return count like the comment says we do.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1713 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_lru.c

@@ -161,7 +161,7 @@ LRU_DiscardOne(void)
 		}
 	}
 	UNLOCK(&lru_mtx);
-	return (0);
+	return (count);
 }
 
 /*