Results 1 issues of tiaoyu

================== WARNING: DATA RACE Write at 0x00c00018e080 by main goroutine: github.com/leesper/tao.(*ClientConn).reconnect() F:/workspace/tao/conn.go:440 +0x36f github.com/leesper/tao.(*ClientConn).Close.func1() F:/workspace/tao/conn.go:418 +0x3f0 sync.(*Once).doSlow() C:/Program Files/Go/src/sync/once.go:68 +0x127 sync.(*Once).Do() C:/Program Files/Go/src/sync/once.go:59 +0x46 github.com/leesper/tao.(*ClientConn).Close() F:/workspace/tao/conn.go:381 +0x64 main.main·dwrap·2() F:/workspace/tao/examples/chat/client/client.go:50 +0x39...