[TIMOB-10802] iOS: Navigation group not firing close event on windows

   function NavGroup() {
       var win = Ti.UI.createWindow();
       var nav = Ti.UI.iPhone.createNavigationGroup();
       var allWindows = [];
       win.add(nav);
        
       function open(_window) {
           if(_window) {
               nav.open(_window);
               allWindows.push(_window);
           } else {
               win.open();
           }
       }
       
       function removeWin(_window) {
   		for(var i = 0, len = allWindows.length; i < len;  i++) {
           	if(_window == allWindows[i]) {
               	allWindows.splice(i, 1);
                   break;
               }
           }    	
       }
    
       function close(_window,opts) {
           if(_window) {
               nav.close(_window,opts);
           } else {
               win.open();
           }
       }
        
       function setWindow(_window) {
           nav.window = _window;
       }
        
       function closeAll() {
           for(var i = 0, len = allWindows.length; i < len; i++) {
               nav.close(allWindows[i]);
           }
       }
       function closeAll2(opts) {
           for(var len = allWindows.length, i = len-1 ; i >=0 ; i--) {
               nav.close(allWindows[i],opts);
           }
       }
       return {
           open: open,
           close: close,
           closeAll:closeAll,
           closeAll2:closeAll2,
           setWindow: setWindow,
           removeWin:removeWin
       }
   }
    
    
   function Window(num){
       var win = Ti.UI.createWindow({
           backgroundColor: '#ccc',
           title: 'Window #'+num,
           number:num
       });
    
       var btnOpen = Ti.UI.createButton({
           title: 'open next',
           top: 10,
           width: Ti.UI.SIZE,
           height: Ti.UI.SIZE
       });
        
       var btnCloseThis = Ti.UI.createButton({
           title: 'close this (animated)',
           top: 60,
           width: Ti.UI.SIZE,
           height: Ti.UI.SIZE
       });
       var btnCloseThis2 = Ti.UI.createButton({
           title: 'close this',
           top: 110,
           width: Ti.UI.SIZE,
           height: Ti.UI.SIZE
       });
   
       var btnCloseAll = Ti.UI.createButton({
           title: 'close All (Back->Front)',
           top: 160,
           width: Ti.UI.SIZE,
           height: Ti.UI.SIZE
       });
        
       var btnCloseAll2 = Ti.UI.createButton({
           title: 'close All (Front->Back animated)',
           top: 210,
           width: Ti.UI.SIZE,
           height: Ti.UI.SIZE
       });
   
       var btnCloseAll3 = Ti.UI.createButton({
           title: 'close All (Front->Back)',
           top: 260,
           width: Ti.UI.SIZE,
           height: Ti.UI.SIZE
       });
   
   
       win.add(btnOpen);
       
       if(num !== 1)
       {
       	win.add(btnCloseThis);
       	win.add(btnCloseThis2);
       	win.add(btnCloseAll);
       	win.add(btnCloseAll2);
       	win.add(btnCloseAll3);
       }
           
        
       btnOpen.addEventListener('click', function(){
           num=win.number+1;
           Nav.open(Window(num));
       });
       btnCloseAll.addEventListener('click', function(){
           Nav.closeAll();
       });
       btnCloseAll2.addEventListener('click', function(){
           Nav.closeAll2({animated:true});
       });
       btnCloseAll3.addEventListener('click', function(){
           Nav.closeAll2({animated:false});
       });
       btnCloseThis.addEventListener('click', function(){
           Nav.close(win,{animated:true});
       });
       btnCloseThis2.addEventListener('click', function(){
           Nav.close(win,{animated:false});
       });
       win.addEventListener('close', function(){
       	Ti.API.info('Closing Window #' + win.number)
       	Nav.removeWin(win);
       });
        
       return win;
   }
    
   var Nav = NavGroup();
   Nav.setWindow(Window(1));
   Nav.open();