bug#29711: 25.2; mode-line distortion when using :box on mac os

[Adam Simpson]

Charles, good catch! It does appear to be fixed in 26 pretest.
Eli, I think it is/was Darwin specific. Not sure what caused it though :(

> On Dec 14, 2017, at 2:56 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> 
>> Date: Thu, 14 Dec 2017 20:51:13 +0100
>> From: charles@aurox.ch (Charles A. Roelli)
>> Cc: 29711@debbugs.gnu.org
>> 
>>> From: Adam Simpson <adam@adamsimpson.net>
>>> Date: Thu, 14 Dec 2017 14:41:52 -0500
>>> 
>>> Must be a issue on macos 10.12 then?
>> 
>> Actually, no: it's my mistake, I had been testing for the bug on the
>> emacs-26 branch instead of the 25.2 release.  I also see the bug on
>> 25.2, so it seems like it's been fixed in version 26.
> 
> FWIW, I cannot see this in 25.2 either, so maybe it was a Darwin
> specific problem.