Fix JIP event removal on dedicated client

[mharis001]

When merged this pull request will:

• Fix CBA_fnc_removeGlobalEventJIP not correctly removing events when called in "wait for object deletion" mode on non-server machine when the object is deleted after the client disconnects
• "Deleted" EH won't exist after the client disconnects and as such the event is never removed, unless added on server

[commy2]

3.13?
Did you actually run into an issue with this?

[mharis001]

Yes, nothing major. Just code that would silently fail when given objNull, this will ensure it doesn't run at all. Could add if (isNull _object) exitWith {}; but I think this is the better solution.