From 230e5382812e44ef812e88b074bb979eabf022d1 Mon Sep 17 00:00:00 2001
From: Klaus Post <klauspost@gmail.com>
Date: Thu, 9 Feb 2023 16:22:35 +0100
Subject: [PATCH] STSCertificateIdentity: Init request form (#1770)

Initialize request form before writing.

Fixes #1769
---
 pkg/credentials/sts_tls_identity.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/credentials/sts_tls_identity.go b/pkg/credentials/sts_tls_identity.go
index a0ad09046..dee0a8cbb 100644
--- a/pkg/credentials/sts_tls_identity.go
+++ b/pkg/credentials/sts_tls_identity.go
@@ -140,6 +140,9 @@ func (i *STSCertificateIdentity) Retrieve() (Value, error) {
 	if err != nil {
 		return Value{}, err
 	}
+	if req.Form == nil {
+		req.Form = url.Values{}
+	}
 	req.Form.Add("DurationSeconds", strconv.FormatUint(uint64(livetime.Seconds()), 10))
 
 	resp, err := i.Client.Do(req)