[TIMOB-6507] iOS: crash after updating the imageView rapidly with remote images

// this sets the background color of the master UIView (when there are no windows/tab groups on it)
Titanium.UI.setBackgroundColor('#000');

var SERVICE_EVENT_URL = "http://api.ticketalternative.com/Services/GetEvents.ashx?months=6&venueid=3&Format=json";
var SERVICE_ARTIST_URL = "http://api.ticketalternative.com/Services/GetArtists.ashx?Format=json&venueId=3";
var URL_IMAGE_SMALL = "http://www.ticketAlternative.com/wiu.aspx?w=187&h=97&p=";

// create tab group
var tabGroup = Titanium.UI.createTabGroup();




//
// create base UI tab and root window
//
var win1 = Titanium.UI.createWindow({  
    title:'Tab 1',
    backgroundColor:'#fff'
});
var tab1 = Titanium.UI.createTab({  
    icon:'KS_nav_views.png',
    title:'Tab 1',
    window:win1
});

var label1 = Titanium.UI.createLabel({
  color:'#999',
  text:'I am Window 1',
  font:{fontSize:20,fontFamily:'Helvetica Neue'},
  textAlign:'center',
  width:'auto'
});

//win1.add(label1);

//
// create controls tab and root window
//
var win2 = Titanium.UI.createWindow({  
    title:'Tab 2',
    backgroundColor:'#fff'
});
var tab2 = Titanium.UI.createTab({  
    icon:'KS_nav_ui.png',
    title:'Tab 2',
    window:win2
});

var label2 = Titanium.UI.createLabel({
  color:'#999',
  text:'I am Window 2',
  font:{fontSize:20,fontFamily:'Helvetica Neue'},
  textAlign:'center',
  width:'auto'
});

win2.add(label2);



var button = Titanium.UI.createButton({
  
  title:'start',
  //backgroundColor : "#ff0000",
  color: "#ff0000",
  width : 150,
  height : 100,
  top:100,
  left:100
  
  
});
var imageView = Titanium.UI.createImageView( 
  {
    top:0,
    left:0,
    width:85,
    height:44
    
  });
win1.add(imageView);
win1.add(button);

button.addEventListener("click", callHTTPService);


//
//  add tabs
//
tabGroup.addTab(tab1);  
tabGroup.addTab(tab2);  


// open tab group
tabGroup.open();



var loadingArtists = false;

var currentURL = SERVICE_EVENT_URL;

var httpClient = null;

// we are going to load artists first, then events, then back to artists to try to make the HTTPClient fail.

function callHTTPService()
{
  Titanium.API.debug("calling service: " + currentURL);
  
  httpClient = Titanium.Network.createHTTPClient();
  operation = "GET";

  httpClient.onload = handleOnLoad;
  //httpClient.ondatastream = ondatastream;
  httpClient.open(operation, currentURL);
  
  
  
  
  httpClient.send();
  
  
}

function handleOnLoad(result )
{
  
  Titanium.API.info("loaded " + currentURL);
  

  updateData( result);

}



function updateData( result)
{
  var data = JSON.parse(httpClient.responseText);
  
  var eventsASjson = data[0].venue.events;
  
  var imgTable = new Array();
  
  
  for (var i=0 ;i< eventsASjson.length; i++)
  {
    
    var jsonObject = eventsASjson[i];
    this.smallImage = URL_IMAGE_SMALL + jsonObject.defaultPhoto;
      // this.imageView.image = this.smallImage;
    Ti.API.info(this.smallImage);
    imgTable.push(this.smallImage);
    
     Titanium.API.debug(imgTable[i])
  }
  
  for(var i=0; i<imgTable.length; i++) {
    imageView.image = imgTable[i];
  }
}