bug#19428: 25.0.50; Frame is wider (in chars) than normal non-deterministically

[Michael Welsh Duggan <mwd@md5i.com>]

If I run "emacs -Q" multiple times in a row with the build described
below in an X environment, I normally get a frame that my window manager
describes as 80x34 characters in size.

However, about one in every ten times, I get a differently sized frame,
usually 84x36.  (And that is indeed the width in chars.)

To repeat, in order to reproduce this I run emacs -Q, check its size,
then type `C-x C-c' and do it again until I see this happening.  This is
also happening to me at work on an older system (Gnome 2 instead of
Gnome 3), with a slightly older (but still recent) build of master.


In GNU Emacs 25.0.50.1 (x86_64-unknown-linux-gnu, X toolkit)
 of 2014-11-27 on maru2
Repository revision: 1e3e8ae1d6da51606bf099e5cf02d6ab1f0c27ec
Windowing system distributor `The X.Org Foundation', version 11.0.11602901
System Description:	Debian GNU/Linux 8.0 (jessie)

Configured using:
 `configure --without-toolkit-scroll-bars --with-x-toolkit=lucid
 'CFLAGS=-Og -ggdb -g3' --with-wide-int'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

-- 
Michael Welsh Duggan
(md5i@md5i.com)