[FIX] Deduplicate dcm2niix output

[mauriliogenovese]

fixes #3579

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 63.18%. Comparing base (682abac) to head (39b3a2c).
Report is 70 commits behind head on master.

❗ Current head 39b3a2c differs from pull request most recent head 45e8076. Consider uploading reports for the commit 45e8076 to get more accurate results

Files	Patch %	Lines
nipype/interfaces/dcm2nii.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@ Coverage Diff @@ ## master #3610 +/- ## ========================================== - Coverage 63.18% 63.18% -0.01%  ========================================== Files 308 308 Lines 40809 40810 +1 Branches 5652 5652 ========================================== Hits 25784 25784 - Misses 14013 14014 +1  Partials 1012 1012 

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[effigies]

Apologies for the delay. Is it possible to write a test that reproduces the issue?

[mauriliogenovese]

I cannot write a test without providing images from a subject and I don't have a public dataset. Anyway the pull request simply removes any duplicate entry from the final file list, so it would be fine in this and any other similar case.