[TIMOB-13236] iOS: Window - Parent window is closed leaving the child window open

//app.js

var window1 = Titanium.UI.createWindow({  
    title:'Tab 1',
    backgroundColor:'#fff'
});
 
		var btn1=Ti.UI.createButton({
			top:20,
			title:'Test1'
		});	
		window1.add(btn1);
		
		
		var win=Ti.UI.createWindow({
			top: 0,
			right: 0,
			bottom: 0,
			left: 0,
			backgroundColor: 'white'
		});
		
		var animWin2;
		var animWin3;
		
		btn1.addEventListener('click',function(){
			animWin2 = true;
			animWin3 = true;
			OpenWindow();				
		});
		
		var win2 = null;
		var win3 = null;
			
		function OpenWindow() {

			win.open();
			loadWindow();
			
			Ti.Gesture.addEventListener('orientationchange', function() {
				if (win2) {
					Ti.API.error('before: height: ' + win2.height);
					Ti.API.error('before: size.height: ' + win2.size.height);
			
					var ht = Ti.Platform.displayCaps.platformHeight - 400;
					Ti.API.error('ht: ' + ht);
			
					win2.height = ht;
			
					Ti.API.error('after: height: ' + win2.height);
					Ti.API.error('after: size.height: ' + win2.size.height);
				}
			});
		}
	
		function loadWindow() {

			var header = Ti.UI.createWindow({
				top: 0,
				right: 0,
				left: 0,
				height: 200,
				backgroundColor: 'green'
			});
			win.add(header);
		
			var btn1 = Ti.UI.createButton({
				top: 0,
				left: 0,
				width: 100,
				height: 50,
				title: 'open win2'
			});
			btn1.addEventListener('click', function() {
				var ht = Ti.Platform.displayCaps.platformHeight - 400;
				win2 = Ti.UI.createWindow({
					left: 0,
					top: 200,
					width: '100%',
					height: ht,
					backgroundColor: 'purple',
					opacity: animWin2 ? 0 : 1,
					url: 'win2.js'
				});
				if (animWin2) {
					win2.open({
						opacity: 1,
						duration: 1000,
					}, function() {
						win2.opacity = 1;
					});
				} else {
					win2.open();
				}
			});
			header.add(btn1);
		
			var btn2 = Ti.UI.createButton({
				top: 0,
				left: 150,
				width: 100,
				height: 50,
				title: 'open win3'
			});
			btn2.addEventListener('click', function() {
				if (animWin3) {
					win3.open({
						opacity: 1,
						duration: 1000,
					});
				} else {
					win3.open();
				}
			});
			header.add(btn2);
		
			var btn3 = Ti.UI.createButton({
				top: 100,
				left: 0,
				width: 150,
				height: 50,
				title: 'Close Windows'
			});
			btn3.addEventListener('click', function() {
				win.close();
				win2.close();
				win3.close();
			});
			header.add(btn3);
		
			win3 = Ti.UI.createWindow({
				top: '50%',
				left: '50%',
				width: 100,
				height: 100,
				backgroundColor: 'yellow',
				opacity: animWin3 ? 0 : 1,
				url: 'win3.js',
			});
		}
		window1.open()
	
//win2.js

var win = Ti.UI.currentWindow;
var lbl = Ti.UI.createLabel({
	top: 100,
	left: 100,
	width: 100,
	height: 50,
	text: 'Window 2'
});
win.add(lbl);

//win3.js

var win = Ti.UI.currentWindow;
var lbl = Ti.UI.createLabel({
	top: 0,
	left: 0,
	width: 100,
	height: 50,
	text: 'Window 3'
});
win.add(lbl);