BUG: fixed a small bug in sct_process_segmentation
BUG: fixed a small bug in sct_process_segmentation

Former-commit-id: 6fcf5a9d7a4a94f4a2cccd1d4869652ba03d2200 [formerly 8b1fbcb830902cfb9144ed96018e6c97c7fda184]
Former-commit-id: 975fd0b7b49b4cacef8507c3ca027959382c7980
Former-commit-id: ae07479cff4762285095ebc249682278dd04bf8c
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox