made mDNS query for paywall check more error resistant

packages/apis/com.daplie.goldilocks/index.js

@@ -85,12 +85,8 @@ module.exports.create = function (deps, conf) {
       var dns = PromiseA.promisifyAll(require('dns'));
       var proms = testDomains.map(function (dom) {
         return dns.resolve6Async(dom)
-          .catch(function (err) {
-            if (err.code === 'ENODATA') {
-              return dns.resolve4Async(dom);
-            } else {
-              return PromiseA.reject(err);
-            }
+          .catch(function () {
+            return dns.resolve4Async(dom);
           })
           .then(function (result) {
             return result[0];