From cf2e80a86931667cc4e504505036e99813c2cfa5 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@victoriametrics.com>
Date: Fri, 1 Mar 2024 21:26:50 +0200
Subject: [PATCH] lib/promrelabel: use clear() function inside CleanLabels()

---
 lib/promrelabel/relabel.go | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/lib/promrelabel/relabel.go b/lib/promrelabel/relabel.go
index 41995e84e..ba0a896ab 100644
--- a/lib/promrelabel/relabel.go
+++ b/lib/promrelabel/relabel.go
@@ -589,9 +589,7 @@ func GetLabelByName(labels []prompbmarshal.Label, name string) *prompbmarshal.La
 //
 // This should help GC cleaning up label.Name and label.Value strings.
 func CleanLabels(labels []prompbmarshal.Label) {
-	for i := range labels {
-		labels[i] = prompbmarshal.Label{}
-	}
+	clear(labels)
 }
 
 // LabelsToString returns Prometheus string representation for the given labels.