message: fix memory leak in PikaReplClient
diff: @@ -24,6 +24,7 @@ PikaReplClient::PikaReplClient(int cron_interval, int keepalive_timeout)
  PikaReplClient::~PikaReplClient() {
  client_thread_->StopThread();
  delete client_thread_;
  + delete handle_;
  for (auto iter : slave_binlog_readers_) {
  delete iter.second;
  }
  