No more L

src/modules/collector/sys/funcs/ntp.go

@@ -12,10 +12,12 @@ import (
 
 var ntpServer string
 
-func NtpOffsetMetrics() (L []*dataobj.MetricValue) {
+func NtpOffsetMetrics()  []*dataobj.MetricValue {
+	var ret []*dataobj.MetricValue
+
 	ntpServers := sys.Config.NtpServers
 	if len(ntpServers) <= 0 {
-		return
+		return ret
 	}
 
 	for idx, server := range ntpServers {
@@ -42,15 +44,15 @@ func NtpOffsetMetrics() (L []*dataobj.MetricValue) {
 		logger.Debugf("ntp client receive time:[%v]\n", dstTime)
 
 		delta := duration / 1e6 // 转换成 ms
-		L = append(L, GaugeValue("sys.ntp.offset.ms", delta))
+		ret = append(ret, GaugeValue("sys.ntp.offset.ms", delta))
 		//one ntp server's response is enough
 
-		return
+		return ret
 	}
 
 	//keep silence when no config ntp server
 	if len(ntpServers) > 0 {
 		logger.Error("sys.ntp.offset error. all ntp servers response failed.")
 	}
-	return
+	return ret
 }