tls: change loop var to let

PR-URL: https://github.com/nodejs/node/pull/30445
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/internal/tls.js b/lib/internal/tls.js
index 80f6d80e18..8bf9330352 100644
--- a/lib/internal/tls.js
+++ b/lib/internal/tls.js
@@ -7,7 +7,7 @@ const { Object } = primordials;
 function parseCertString(s) {
   const out = Object.create(null);
   const parts = s.split('\n');
-  for (var i = 0, len = parts.length; i < len; i++) {
+  for (let i = 0, len = parts.length; i < len; i++) {
     const sepIndex = parts[i].indexOf('=');
     if (sepIndex > 0) {
       const key = parts[i].slice(0, sepIndex);