bug#16306: 24.3.50; font change creates blank column on Lucid

[Eli Zaretskii]

> Date: Tue, 31 Dec 2013 11:27:36 +0900
> From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
> 
> Steps to reproduce:
> 
>   1. $ emacs -Q &
>   2. (set-frame-font "Courier-18") C-j
> 
> Then a blank column is created on the right edge of the frame (i.e.,
> to the right of the right fringe).
> 
> I can reproduce it if Emacs is compiled with the Lucid widgets
> support, but not for GTK+ or non-toolkit builds.

Is the frame resized as result of changing the font, or do the frame
dimensions stay fixed?