Author: Paul Licameli <paul.licameli@audacityteam.org>
Date: Tue Nov 13 08:36:22 2018 -0500
lib-src/libnyquist: fix warning about always-false comparison...
... but this raises questions about the intention to catch negative values,
which if they ever happened, were just mis-cast to unsigned at call sites
2870d0c8d7