Fix wait load mask method
Fix wait load mask method

antonfisher/mocha-extjs,antonfisher/extjs-testing-tool,antonfisher/node-mocha-extjs,antonfisher/node-mocha-extjs,antonfisher/node-mocha-extjs,antonfisher/mocha-extjs,antonfisher/extjs-testing-tool,antonfisher/extjs-testing-tool,antonfisher/mocha-extjs