[m-rev.] for post-commit review: shut up some C# warnings

[Peter Wang]

On Fri, 11 Mar 2022 15:54:52 +1100 Julien Fischer <jfischer at opturion.com> wrote:
> 
> On Fri, 11 Mar 2022, Peter Wang wrote:
> >
> > I pushed a more direct fix for the unused variable warning (168).
> > If it breaks some older C# compiler that we supposedly support then it
> > can be reverted easily.
> 
> The oldest C# compiler we need to support is the Mono CS compiler
> version 6.8.0.X (i.e. the one on RHEL 7 based systems), since that's
> the one installed on the server that builds the ROTDs.

Ok, that's fine then.

Peter