getInodeFromStat: return error on failure

[thaJeztah]

Linting started to fail on this one.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 65.60%. Comparing base (2cd730e) to head (4fd111b).
⚠️ Report is 49 commits behind head on main.

Files with missing lines	Patch %	Lines
archive.go	0.00%	1 Missing ⚠️
archive_unix.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #50      +/-   ##
==========================================
- Coverage   66.35%   65.60%   -0.76%     
==========================================
  Files          42       42              
  Lines        2027     2035       +8     
==========================================
- Hits         1345     1335      -10     
- Misses        497      528      +31     
+ Partials      185      172      -13     

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