msct_parser: remove weirdness printing nothing
msct_parser: remove weirdness printing nothing


Former-commit-id: 56d24927bf7d6248d56fb755ba7db68e52a9430f
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox