In benchmark directory this changes for loops
using var to let when it applies for consistency
PR-URL: https://github.com/nodejs/node/pull/28958
Reviewed-By: Anna Henningsen <anna@addaleax.net>
PR-URL: https://github.com/nodejs/node/pull/11564
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jackson Tian <shyvo1987@gmail.com>