[US][KKS] Fixed a bug that caused an exception when changing clothes

[takahiro0327]

Fixed a bug that caused an exception when changing clothes. Merge if it looks good.

callstacks:

NullReferenceException: Object reference not set to an instance of an object
  at KK_Plugins.UncensorSelector+UncensorSelectorController.UpdateSkinOverlay () [0x00001] in <1b0e1f94379042399ec02109d7c0bf8a>:0 
  at KK_Plugins.UncensorSelector+UncensorSelectorController+<ReloadCharacterUncensor>d__37.MoveNext () [0x00120] in <1b0e1f94379042399ec02109d7c0bf8a>:0 
  at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00026] in <548b4fa0e7e04f27a1b7580930bfb7dc>:0 

output_log.txt

Reproduction procedure:

1. launch Sunshine studio
2. Load any character
3. Open the Load Costume menu
4. Click Show Selection
5. Click on Switch Costumes

It was directly caused by UpdateSkinOverlay() being called while _ksox was null.
Reload is called before Start().
However, this does not seem to happen every time, but only when clicking Show Selection.
There may be a more fundamental cause. Please let me know if there is a problem with the fix.

[ManlyMarco]

Thank you for the PR!

This looks to be caused by the plugin that adds the extra switch options, but the fix is general enough to merge into ME.