bug#38109: Updated Emacs to HEAD, consistently not scaling now

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Thu, 07 Nov 2019 22:49:13 +0100
> Cc: 38109@debbugs.gnu.org
> 
> Hm.  Odd.  When I try
> 
> (insert-image (create-image "/tmp/foo.png" nil nil :scale 10))
> 
> etc, I get the proper scaling with png and gif, but not with xpm.
> (Running from HEAD with -Q.)

Maybe there's some X-specific problem.  I see no problem on
MS-Windows.