RFA (tree.c): PATCH to make warn_deprecated_use return bool

[Richard Biener]

On Wed, May 16, 2018 at 3:01 AM Jason Merrill <jason@redhat.com> wrote:

> The function "warning" returns bool to indicated whether or not any
> diagnostic was actually emitted; warn_deprecated_use should as well.

> It's also unnecessary to duplicate the warning code between the cases
> of null or non-null "decl", since the actual warnings were the same.
> The only thing that's different is whether we indicate the source
> location of "decl".

> Tested x86_64-pc-linux-gnu.  OK for trunk?

OK.

Richard.