suzerain: fix return when ax supplied

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@45558 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: correct return values

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@45559 0bd85f0b-c151-43b9-a1e9-27231104551f