Fix pub/sub disconnection.

server.c

@@ -90,9 +90,8 @@ server_free(struct server *s) {
 	/* cleanup Redis async object, _before_ the 2 struct event. */
 	redisAsyncFree(s->ac);
 
-	event_del(&s->ev);
+	/* event_del(&s->ev); */
 	event_del(&s->ev_reconnect);
-
 	free(s);
 }