Fix several CoreBox (but with no apparent gain)

[joa-quim]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 61.29032% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.00%. Comparing base (4286f3d) to head (3bf4804).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/sample1d.jl	15.38%	11 Missing ⚠️
src/gdal_utils.jl	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1870      +/-   ##
==========================================
- Coverage   86.03%   86.00%   -0.03%     
==========================================
  Files         177      177              
  Lines       26597    26604       +7     
==========================================
  Hits        22882    22882              
- Misses       3715     3722       +7     

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