Fix more CoreBoxes

[joa-quim]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 57.89474% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.98%. Comparing base (9dc82cd) to head (3abc1c2).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/gmtreadwrite.jl	0.00%	9 Missing ⚠️
src/spatial_funs.jl	50.00%	6 Missing ⚠️
src/utils_types.jl	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1871      +/-   ##
==========================================
- Coverage   85.98%   85.98%   -0.01%     
==========================================
  Files         177      177              
  Lines       26605    26621      +16     
==========================================
+ Hits        22877    22889      +12     
- Misses       3728     3732       +4     

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