Most check_FOO() take the thing being checked as first argument.
check_name(), check_type(), check_known_keys() don't. Clean that up.
While there, drop a "Todo" comment that should have been dropped in
commit 87adbbffd4 "qapi: add a dictionary form for TYPE".
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20190927134639.4284-9-armbru@redhat.com>