Napa OOTB Apps.js leaking globals

OOTB_apps.js

var context;
var web;
var user;

// This code runs when the DOM is ready. It ensures the SharePoint
// script file sp.js is loaded and then executes sharePointReady()
$(document).ready(function () {
    SP.SOD.executeFunc('sp.js', 'SP.ClientContext', sharePointReady);
});

// This function creates a context object which is needed to use the SharePoint object model
function sharePointReady() {
    context = new SP.ClientContext.get_current();
    web = context.get_web();

    getUserName();
}

// This function prepares, loads, and then executes a SharePoint query to get the current users information
function getUserName() {
    user = web.get_currentUser();
    context.load(user);
    context.executeQueryAsync(onGetUserNameSuccess, onGetUserNameFail);
}

// This function is executed if the above call is successful
// It replaces the contents of the 'helloString' element with the user name
function onGetUserNameSuccess() {
    $('#message').text('Hello ' + user.get_title());
}

// This function is executed if the above call fails
function onGetUserNameFail(sender, args) {
    alert('Failed to get user name. Error:' + args.get_message());
}

QuickFixNoGlobals.js

// This code runs when the DOM is ready. It ensures the SharePoint
// script file sp.js is loaded and then executes sharePointReady()
$(document).ready(function () {
	var context;
	var web;
	var user;
    SP.SOD.executeFunc('sp.js', 'SP.ClientContext', sharePointReady);
	
// This function creates a context object which is needed to use the SharePoint object model
function sharePointReady() {
    context = new SP.ClientContext.get_current();
    web = context.get_web();

    getUserName();
}

// This function prepares, loads, and then executes a SharePoint query to get the current users information
function getUserName() {
    user = web.get_currentUser();
    context.load(user);
    context.executeQueryAsync(onGetUserNameSuccess, onGetUserNameFail);
}

// This function is executed if the above call is successful
// It replaces the contents of the 'helloString' element with the user name
function onGetUserNameSuccess() {
    $('#message').text('Hello ' + user.get_title());
}

// This function is executed if the above call fails
function onGetUserNameFail(sender, args) {
    alert('Failed to get user name. Error:' + args.get_message());
}
});