fix refererLimit 函数逻辑错误

@@ -13,7 +13,7 @@ const url = require('url');
 exports.refererLimit = (referer, blacklist) => {  // eslint-disable-line
     let result = decodeURIComponent(referer || '/home');
 
-    let urlObj = url.parse(referer, false, true);
+    let urlObj = url.parse(result, false, true);
 
 
     if (urlObj.hostname && !/(?:yohobuy\.com$)|(?:yoho\.cn$)/.test(urlObj.hostname)) {