fix ["Successfully login as undefined"] when private_favorites is empty

Author: sunznx

lib/plugins/leetcode.js

@@ -499,10 +499,10 @@ plugin.signin = function(user, cb) {
 plugin.getUser = function(user, cb) {
   plugin.getFavorites(function(e, favorites) {
     if (!e) {
+      user.name = favorites.user_name;
       const f = favorites.favorites.private_favorites.find(f => f.name === 'Favorite');
       if (f) {
         user.hash = f.id_hash;
-        user.name = favorites.user_name;
       } else {
         log.warn('Favorite not found?');
       }