bug#25851: 25.2; GTK warning when starting Emacs when desktop file has more than one frame

[Eli Zaretskii]

> Date: Wed, 01 Mar 2017 20:36:10 +0100
> From: martin rudalics <rudalics@gmx.at>
> CC: nljlistbox2@gmail.com, 25851@debbugs.gnu.org
> 
>  > If that's the reason, and we think doing that is legitimate, is there
>  > any other solution but to shut up the warning?
> 
> I think that warning is legitimate.

It's legitimate, but what we do as legitimate as well, right?  And
emitting a warning in such use cases will only annoy users, right?