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

[Adam Sjøgren]

Alan writes:

> Every time I look at those screenshots I think that perhaps we should
> turn off the smoothing completely, then remember I turned it on
> because photos of real things looked awful without it.

Good point.

But hard to tell whether to smooth or not, I guess? xpm's are probably
often not-photos, but png's...

> Thanks for your help.

Thank you for fixing the problem!