Missing reference to cXSUntypedAtomic in XSInteger.js

[drakesolutions]

Hi Sergey,

I have found one little bug in your library. Within a file XSInteger.js in method cXSInteger.cast you have used unreferenced class cXSUntypedAtomic.

so only needed to solve of this problem is add one line of code with reference to it on top of this file.

var cXSUntypedAtomic = require('./../XSUntypedAtomic');

thank you in advance

Ivan