bug#31312: Segmentation fault with doom-emacs, NeoTree and Zoom

[martin rudalics]

> So we need the same defense after prepare_menu_bars as we
> have after do_pending_changes, I think.

If you mean something like

  if (WINDOWP (selected_window) && (w = XWINDOW (selected_window)) != sw)
    sw = w;

I'm afraid that this would fail since selected_window has no buffer
any more (or may have even been recycled already).  Or am I missing
something?

martin