bug#36560: Add comment when closing bugs to show it was not by accident

[Eli Zaretskii]

> From: 積丹尼 Dan Jacobson
>  <jidanni@jidanni.org>
> Date: Tue, 09 Jul 2019 19:49:07 +0800
> 
> I see bugs are now just closed without comment these days.
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=34307
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=34311
> If a comment is added, we can tell if they were closed by accident or not. 

They were both tagged "wontfix", which explains the reason nicely, I
think.