BUG: Fixed a small bug on None condition (#1594)
BUG: Fixed a small bug on None condition (#1594)



Former-commit-id: 15a11c4253a753f356265e58e6e8f127b3b53bd0
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox