add ctx initialize

zhangzengfei

2022-05-24 1f97c2e7d45010b6917552ae18687919b92dd454

 searcher.go

@@ -78,6 +78,7 @@
}

func CreateSearchNode(key string) (*memberlist.Memberlist, error) {
   members = make(map[string]NodeInfo,0)
   conf := memberlist.DefaultLocalConfig()
   conf.Events = &eventDelegate{}
   conf.Delegate = &delegate{}