dns: added suggestion from comments

PR-URL: #39987
Fixes: #31566
Refs: #6307
Refs: #20710
Refs: #38099
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>

lib/internal/dns/utils.js

@@ -196,14 +196,7 @@ function emitInvalidHostnameWarning(hostname) {
 let dnsOrder = getOptionValue('--dns-result-order') || 'verbatim';
 
 function getDefaultVerbatim() {
-  switch (dnsOrder) {
-    case 'verbatim':
-      return true;
-    case 'ipv4first':
-      return false;
-    default:
-      return true;
-  }
+  return dnsOrder !== 'ipv4first';
 }
 
 function setDefaultResultOrder(value) {