[Kernel] Fix XStaticUntypedEnumerator item count.
[Kernel] Fix XStaticUntypedEnumerator item count.

[Kernel] Fix XStaticUntypedEnumerator not tracking item count.

Somehow this didn't make it into PR #1862.

sephiroth99/xenia,sephiroth99/xenia,sephiroth99/xenia