pr review fixes

Author: JoernBerkefeld

lib/metadataTypes/Folder.js

@@ -296,13 +296,12 @@ class Folder extends MetadataType {
      * @returns {Promise} Promise
      */
     static async update(metadata) {
-        const tempCustomerKey = metadata.CustomerKey;
         const path = metadata.Path;
         try {
             const response = await super.updateSOAP(metadata, 'DataFolder', true);
             if (response) {
                 response.body.Results[0].Object = metadata;
-                response.body.Results[0].Object.CustomerKey = tempCustomerKey;
+                response.body.Results[0].Object.CustomerKey = metadata.CustomerKey;
                 delete response.body.Results[0].Object.$;
                 Util.logger.info(`- updated folder: ${path}`);
                 return response;