bug#56553: 29.0.50; ASAN error with fringe bitmaps on NS

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  56553@debbugs.gnu.org
> Date: Fri, 15 Jul 2022 16:23:09 +0800
> 
> > The NSBezierPath stuff I don't know.  I gather, from a short look at
> > the docs, that one can "record" stuff that should be drawn in such an
> > object.  The path can then later be used to actually draw.  Looks a
> > tad complicated to me to draw single pixels as a rectangle of size 1,
> > but what do I know...
> 
> Believe it or not, it's the only way to record such a pixel without
> resulting in annoying scaling artifacts from the OS trying to scale the
> image up to monitor resolution.

How about some comment there explaining what it tries to do?