fix #2347: This mutex is not locked

cmd/gocq/login.go

@@ -312,8 +312,13 @@ func signSubmit(uin string, cmd string, callbackID int64, buffer []byte, t strin
  signServer += "/"
  }
  buffStr := hex.EncodeToString(buffer)
- log.Infof("submit %v: uin=%v, cmd=%v, callbackID=%v, buffer-end=%v", t, uin, cmd, callbackID,
- buffStr[len(buffStr)-10:])
+ tail := 64
+ endl := "..."
+ if len(buffStr) < tail {
+ tail = len(buffStr)
+ endl = "."
+ }
+ log.Infof("submit %v: uin=%v, cmd=%v, callbackID=%v, buffer=%v%s", t, uin, cmd, callbackID, buffer[:tail], endl)
  _, err := download.Request{
  Method: http.MethodGet,
  URL: signServer + "submit" + fmt.Sprintf("?uin=%v&cmd=%v&callback_id=%v&buffer=%v",
@@ -334,9 +339,7 @@ func signCallback(uin string, results []gjson.Result, t string) {
  if err != nil {
  log.Warnf("callback error: %v", err)
  }
- if len(ret) > 10 {
- signSubmit(uin, cmd, callbackID, ret, t)
- }
+ signSubmit(uin, cmd, callbackID, ret, t)
  }
 }