[TIMOB-24364] iOS: HTTP Client leaks memory during upload using kroll-thread, eventually causing a force close

   [ERROR] Script Error {
   [ERROR]     column = 39;
   [ERROR]     line = 74;
   [ERROR]     message = "undefined is not an object (evaluating 'chunkDataString.t
   oString')";
   [ERROR]     sourceURL = "file:///Users/sharifabudarda/Library/Developer/CoreSimu
   lator/Devices/C0512E31-7C48-4B29-94FA-7F9844B2ABFA/data/Containers/Bundle/Applic
   ation/94D71FF0-DB7F-4FB2-8988-CE63F75ED484/Upload%20Leak%20Demo.app/alloy/contro
   llers/index.js";
   [ERROR]     stack = "upload@file:///Users/sharifabudarda/Library/Developer/CoreS
   imulator/Devices/C0512E31-7C48-4B29-94FA-7F9844B2ABFA/data/Containers/Bundle/App
   lication/94D71FF0-DB7F-4FB2-8988-CE63F75ED484/Upload%20Leak%20Demo.app/alloy/con
   trollers/index.js:74:39\ndoClick@file:///Users/sharifabudarda/Library/Developer/
   CoreSimulator/Devices/C0512E31-7C48-4B29-94FA-7F9844B2ABFA/data/Containers/Bundl
   e/Application/94D71FF0-DB7F-4FB2-8988-CE63F75ED484/Upload%20Leak%20Demo.app/allo
   y/controllers/index.js:12:15";
   [ERROR] } 
   

   Operating System
     Name                        = Mac OS X
     Version                     = 10.12.2
     Architecture                = 64bit
     # CPUs                      = 4
     Memory                      = 8589934592
   
   Node.js
     Node.js Version             = 4.7.0
     npm Version                 = 2.15.11
   
   Titanium CLI
     CLI Version                 = 5.0.11
   
   Titanium SDK
     SDK Version                 = 6.0.1.GA
     SDK Path                    = /Users/sharifabudarda/Library/Application Suppor
   t/Titanium/mobilesdk/osx/6.0.1.GA
     Target Platform             = iphone
   

   NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
   // Code
   [pool release];
   

   var x = 1;
   
   var win = Ti.UI.createWindow({
       backgroundColor: '#fff'
   });
   
   var btn = Ti.UI.createButton({
       title: 'Trigger'
   });
   
   btn.addEventListener('click', function() {
       upload();
   });
   
   win.add(btn);
   win.open();
   
   
   function upload() {
   	
       var XHR = require("/xhr");
   	var xhr = new XHR();
       var filename = "UploadImage-"+x+".data";
   
   	var failed = function(e){
   		console.log("Fail: " + filename);
   		xhr = null;
   		XHR = null;
   		upload();
   	};
   	var success = function(e){
   		console.log("Success: " + filename);
   		xhr = null;
   		XHR = null;
   		upload();
   	};
   
   	var file = Titanium.Filesystem.getFile(Ti.Filesystem.resourcesDirectory, filename);
   	var blob = file.read();
       
       if (!file.exists()) {
           file = null;
           blob = null;
           
           Ti.API.info('Done!');
           
           return;
       }
       
   	var chunkDataString = Ti.Utils.base64encode(blob);
   	var uploadRequest = {ChunkData:chunkDataString.toString()};
   	var params = { "authenticationToken": "LD8ibszgWIycO62cKn7pq7smtGg6j1xPCC9urwb6V0k=", "uploadRequest": uploadRequest };
   
   	xhr.post("http://52.19.216.46/qpulse5offlineauditserver/AttachmentService.svc/json/PutAttachmentItemChunkWithStringData", JSON.stringify(params), success, failed, null);
       
       file = null;
       blob = null;
       chunkDataString = null;
       
       console.log("Upload: " + filename);
       x++;
   }
   

    var win = Ti.UI.createWindow({
        backgroundColor: '#fff'
    });
    
    var btn = Ti.UI.createButton({
        title: 'Trigger'
    });
    
    btn.addEventListener('click', function() {
        var url = "http://www.appcelerator.com";
        var client = Ti.Network.createHTTPClient({
            // function called when the response data is available
            onload : function(e) {
                Ti.API.info("Received text: " + this.responseData);
                alert('success');
            },
            // function called when an error occurs, including a timeout
            onerror : function(e) {
                Ti.API.debug(e.error);
                alert('error');
            },
            timeout : 5000  // in milliseconds
        });
        // Prepare the connection.
        client.open("GET", url);
        // Send the request.
        client.send();
    });
    
    win.add(btn);
    win.open();