bug#7464: 24.0.50; mouse highlighting vanishes upon unsplitting window

[Eli Zaretskii]

> From: Chong Yidong <cyd@gnu.org>
> Cc: stephen.berman@gmx.net,  7464@debbugs.gnu.org
> Date: Thu, 22 Mar 2012 00:29:06 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> > 1. emacs -q
> >> > 2. C-x 2
> >> > 3. Put the mouse pointer over one of the links in the splash screen, so
> >> > that the link becomes highlighted.
> >> > 4. C-x 1
> >> > => The highlighting from step 3 disappears
> >>
> >> > This problem is reliably reproducible, also on earlier builds of Emacs
> >> > 24 I have, but not on Emacs 23.1.91 (I don't have 23.2).
> >> 
> >> I can reproduce it on Windows in Emacs 23.2.90 and also in stock Emacs
> >> 23.2 and Emacs 23.1.  I don't have Emacs 23.1.90 anymore to test.
> 
> I can't reproduce this with latest trunk (x86_64-unknown-linux-gnu, GTK+
> Version 3.2.0).  Maybe this has been fixed since the bug report?  Eli,
> could you check again, since you could reproduce it before?

Still reproducible here.