dns: remove duplicate code

PR-URL: #32664
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: James M Snell <[email protected]>

Author: rickyes

lib/dns.js

@@ -65,11 +65,7 @@ function onlookup(err, addresses) {
   if (err) {
     return this.callback(dnsException(err, 'getaddrinfo', this.hostname));
   }
-  if (this.family) {
-    this.callback(null, addresses[0], this.family);
-  } else {
-    this.callback(null, addresses[0], isIP(addresses[0]));
-  }
+  this.callback(null, addresses[0], this.family || isIP(addresses[0]));
 }