lib: reduce url getters on makeRequireFunction

PR-URL: #48492
Refs: nodejs/performance#92
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: anonrig

lib/internal/modules/cjs/helpers.js

@@ -87,19 +87,17 @@ function makeRequireFunction(mod, redirects) {
       if (destination === true) {
         missing = false;
       } else if (destination) {
-        const href = destination.href;
-        if (destination.protocol === 'node:') {
+        const { href, protocol } = destination;
+        if (protocol === 'node:') {
           const specifier = destination.pathname;
           const mod = loadBuiltinModule(specifier, href);
           if (mod && mod.canBeRequiredByUsers) {
             return mod.exports;
           }
           throw new ERR_UNKNOWN_BUILTIN_MODULE(specifier);
-        } else if (destination.protocol === 'file:') {
-          let filepath;
-          if (urlToFileCache.has(href)) {
-            filepath = urlToFileCache.get(href);
-          } else {
+        } else if (protocol === 'file:') {
+          let filepath = urlToFileCache.get(href);
+          if (!filepath) {
             filepath = fileURLToPath(destination);
             urlToFileCache.set(href, filepath);
           }