bug#65919: 29.1; build without xinput does not get focused when hovering over window

[Eli Zaretskii]

> Cc: 65919@debbugs.gnu.org, Lars Ingebrigtsen <larsi@gnus.org>,
>  Ivan Popovych <ivan@ipvych.com>, Bob Rogers <rogers@rgrjr.com>
> From: Amin Bandali <bandali@gnu.org>
> Date: Thu, 14 Sep 2023 23:57:26 -0400
> 
> Hello,
> 
> Po Lu writes:
> 
> > This should be fixed on the master branch.  [...]
> 
> FYI your e1a730017d6 patch introduces the following compiler warning:
> 
> process.c: In function ‘child_signal_notify’:
> process.c:7436:54: warning: suggest braces around empty body in an ‘if’ 
> statement [-Wempty-body]
>  7436 |     /* emacs_perror ("writing to child signal FD") */;
>       |                                                      ^

Thanks, should be fixed now.