Assert that the event manager found something for each pending fd.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2719 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/mgt_event.c

@@ -480,5 +480,6 @@ ev_schedule_one(struct evbase *evb)
 			free(e);
 		}
 	}
+	assert(i == 0);
 	return (1);
 }