Fix to commit 893a06e062 which broke the SIGMA_SHELF_ZSTAR option#1459

marshallward merged 2 commits into

mom-ocean:dev/gfdlmom-ocean/MOM6:dev/gfdlfrom

MJHarrison-GFDL:sigma_shelf_zstarMJHarrison-GFDL/MOM6:sigma_shelf_zstarCopy head branch name to clipboard