bug#4534: assertion failure at window.c:grow_mini_window

[Eli Zaretskii]

> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Fri, 25 Sep 2009 13:30:38 +0200
> Cc: 4534@emacsbugs.donarmstrong.com, rudalics@gmx.at
> 
> Anyway, the last patch by Martin worked as expected, at least for this
> bug. Is there any downside to it?

I don't think so, I just wanted to maybe help explain the confusing
behavior.