request redirect test多次重定向导致内存泄漏警告

请求重定向测试运行服务器node server.js [maxRedirects] maxRedirects 默认值为10。示例如下：

node server.js 运行测试

node req.js [maxRedirects]

node req-pipe.js [maxRedirects]

node req.js 8

error: [Error: Exceeded maxRedirects. Probably stuck in a redirect loop http://127.0.0.1:8681/8]

node req.js 9

(node) warning: possible EventEmitter memory leak detected. 11 listeners added. Use emitter.setMaxListeners() to increase limit.