bug#23707: 25.0.94; Regression in mouse-set-region

[Eli Zaretskii]

> Date: Tue, 07 Jun 2016 11:10:04 +0200
> From: martin rudalics <rudalics@gmx.at>
> 
> Both scenarios are easily reproducible on Windows.  Would the attached
> patch fix it for you?

I arrived at the same fix.  Which made me wonder: why not use the
window-point always, and ignore event-end?  Will that ever be wrong?
If not, perhaps we should do that on master.

Thanks.