Fix git diff detection

[Haeki]

Pre-Request Checklist

• Passes rubocop code analysis (try rubocop --auto-correct)

- [ ] Tests added or adapted (try rake test)
- [ ] Changes are reflected in the documentation
- [ ] User-visible changes appended to CHANGELOG.md

Description

Fixes a bug caused by the RuboCop autocorrect.
In /lib/oxidized/output/git.rb the code in line 82 caused an error.
Cause is next if commit.diff(paths: [path]).empty?, the return value of diff has no empty? function.
The old line next if commit.diff(paths: [path]).empty? was correct.
The same mistake was corrected in this commit back in 2019.
This time i also disabled the RuboCop check for this line so that autocorrect doesn't change this again.

Possibly this also solves issues 2715 and 2282 because the error when clicking the "Version" button led me to this bug. And this bugfix solved it for me.

[ewysong]

I'm on a brand new install of oxidized 0.29.0 on Ubuntu 22.04, and can confirm I had the issues mentioned in #2715 and #2282 which were solved by this pull request.

[mikegleasonjr]

Fixed for me too

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (637434b) 66.40% compared to head (431aa79) 66.40%.

❗ Current head 431aa79 differs from pull request most recent head 511effa. Consider uploading reports for the commit 511effa to get more accurate results

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2758   +/-   ##
=======================================
  Coverage   66.40%   66.40%           
=======================================
  Files          30       30           
  Lines        1500     1500           
=======================================
  Hits          996      996           
  Misses        504      504           

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[aschaber1]

I rewrote this into an inline disablement, as it's used more commonly elsewhere in the repo instead of the block, when just a single line is marked.

Thank you for your help :)