benchmark: fix http headers benchmark

PR-URL: #27021
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

benchmark/http/headers.js

@@ -14,7 +14,9 @@ function main({ len, n }) {
     'Transfer-Encoding': 'chunked',
   };
 
-  const Is = [ ...Array(n / len).keys() ];
+  // TODO(BridgeAR): Change this benchmark to use grouped arguments when
+  // implemented. https://github.com/nodejs/node/issues/26425
+  const Is = [ ...Array(Math.max(n / len, 1)).keys() ];
   const Js = [ ...Array(len).keys() ];
   for (const i of Is) {
     headers[`foo${i}`] = Js.map(() => `some header value ${i}`);