dns: improve lookup performance by ~3%

[anonrig]

This change improves dns lookup performance by roughly 3%.

Referencing: #44627

 confidence improvement accuracy (*) (**) (***)
dns/lookup-promises.js n=5000000 all='false' name='::1' -0.03 % ±2.42% ±3.23% ±4.22%
dns/lookup-promises.js n=5000000 all='false' name='127.0.0.1' 0.01 % ±2.77% ±3.69% ±4.80%
dns/lookup-promises.js n=5000000 all='true' name='::1' 0.29 % ±1.67% ±2.23% ±2.90%
dns/lookup-promises.js n=5000000 all='true' name='127.0.0.1' 2.99 % ±5.73% ±7.70% ±10.16%
dns/lookup.js n=5000000 all='false' name='::1' 0.37 % ±0.86% ±1.14% ±1.49%
dns/lookup.js n=5000000 all='false' name='127.0.0.1' -0.21 % ±0.79% ±1.05% ±1.37%
dns/lookup.js n=5000000 all='true' name='::1' 0.51 % ±0.93% ±1.24% ±1.61%
dns/lookup.js n=5000000 all='true' name='127.0.0.1' -0.50 % ±0.89% ±1.18% ±1.55%
Be aware that when doing many comparisons the risk of a false-positive result increases.
In this case, there are 8 comparisons, you can thus expect the following amount of false-positive results:
0.40 false positives, when considering a 5% risk acceptance (*, **, ***),
0.08 false positives, when considering a 1% risk acceptance (**, ***),
0.01 false positives, when considering a 0.1% risk acceptance (***)
`

[nodejs-github-bot]

Review requested:

• @nodejs/net

[mscdex]

I think you're misinterpreting the benchmark comparison output here. You should be looking for repeatable results with *** in the confidence column to ensure that this is indeed an improvement.

[Gordapanela]

Review requested:

• @ide /net

[anonrig]

You're definitely right. I totally missed it. I'm closing the pull request until I find a better improvement. Thanks!