bug#37609: Tool-bar-mode grows the frame's height

[martin rudalics]

> Sorry for the mess.  Actually, in Lucid emacs -Q -f tool-bar-mode:
>
> (frame-height)
> 36
>
> (let ((initial (assq 'outer-size (frame-geometry))))
>    (tool-bar-mode 1)
>    (tool-bar-mode 0)
>    (list (assq 'outer-size (frame-geometry)) initial))
> ((outer-size 696 . 687) (outer-size 696 . 687))
>
> (frame-height)
> 36

That's better.

martin