[AC-3150] iOS: UI - tableViewRow backgroundImage not released from memory

//Create a window with a button, and a label to show available memory
var memoryLabel = Ti.UI.createLabel({
	height:132,
	text:'',
	width:276
})

var openButton = Ti.UI.createButton({
	height:44,
	title:'Open Second Window',
	width:276
});
openButton.addEventListener('click', openSecondWindow); //When the button is clicked open a new window

var firstWindow = Ti.UI.createWindow({
	backgroundColor:'#fff',
	layout:'vertical',
	title:'First Window'
});
firstWindow.add(memoryLabel);
firstWindow.add(openButton);

//Add the window to a navigation group
var navGroup = Ti.UI.iPhone.createNavigationGroup({
	window:firstWindow
});

//Add the navigation group to a main application window, and open it
var appWindow = Ti.UI.createWindow();
appWindow.add(navGroup);
appWindow.open();

//Display the initial amount of available memory
updateMemoryLabel();


//Open a new window that contains a tableView with 60 rows
function openSecondWindow()
{
	var tableData = [];
	
	//Create 60 tableView rows with background images 
	for (var i = 0; i < 60; i++)
	{
		var tableViewRow = Ti.UI.createTableViewRow({
			backgroundImage:'tablerow.png',
			height:100
		});
		
		tableData.push(tableViewRow);
	}

	//Create a tableView and add the rows to it
	var tableView = Ti.UI.createTableView({
		separatorStyle:Ti.UI.iPhone.TableViewSeparatorStyle.NONE
	});
	tableView.setData(tableData);

	//Create a window, and add the tableView
	var secondWindow = Ti.UI.createWindow({
		backgroundColor:'#fff',
		title:'Second Window'
	});
	secondWindow.addEventListener('close', updateMemoryLabel); //When the window is closed, update the available memory display
	secondWindow.add(tableView);	

	//Open the new window
	navGroup.open(secondWindow);
}

//Update the label that shows available memory in First Window 
function updateMemoryLabel()
{
	memoryLabel.text = "Available Memory: " + Ti.Platform.availableMemory;
}