Stage.ScrollFocus mistyped

[xpenatan]

I think oldScrollFocus actor needs to be scrollFocus listener and not keyboardFocus listener.

Stage at line 638

public void setScrollFocus (Actor actor) {
        if (scrollFocus == actor) return;
        FocusEvent event = Pools.obtain(FocusEvent.class);
        event.setStage(this);
        event.setType(FocusEvent.Type.scroll);
        Actor oldScrollFocus = keyboardFocus;
...