Adds return statement to points_to_coeffs

[agrieve-cfs]

Description

Adds a return statement to coeffs_to_points function in MCNPInput.py

Fixes Issue

#292

Checklist

• I'm making a PR from a feature branch on my fork into GEOUNED-org/GEOUNED/dev branch
• I have followed PEP8 style guide for Python or run a formatter such as black or ruff format on my code
• [N/A] I have made corresponding changes to the documentation
• [] I have added tests that prove my fix is effective or that my feature works

[shimwell]

Thanks for making this PR and clear issue #292

It looks useul and has also been proposed by others. So I think we should merge this one in as it is good to go.

This change has also been suggested in #291 . But just like #293 it was based of the wrong branch.

LGTM

[agrieve-cfs]

Thanks for making this PR and clear issue

It looks useul and has also been proposed by others. So I think we should merge this one in as it is good to go.

This change has also been suggested in #291 . But just like #293 it was based of the wrong branch.

LGTM

@shimwell
Admitedly, I did not look at the current PRs or Issues.
It does look like @py1sl's PR is more inclusive and adds documentation (though neither of us have added a test for this particular feature). Perhaps @py1sl can rebase to dev, dropping main commits and force push to his PR? I don't want to rush something into the repo (especially since I have a working version locally haha).

[akolsek]

Whenever you can @psauvan , please review this PR.