BUG: don't stop program if the temporary folder wasn't deleted
BUG: don't stop program if the temporary folder wasn't deleted

Former-commit-id: fd803b7937367038f15526bc375823d1a73162f9
Former-commit-id: d879592b33d7edf365c86569f960b0191234c83a
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox