[alien] Fix some compilation warnings

[grospelliergilles]

No description provided.

[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (50de0e9) 72.20% compared to head (db137cf) 72.20%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
...rc/core/alien/kernels/simple_csr/SimpleCSRVector.h	33.33%	4 Missing ⚠️
...one/src/core/alien/kernels/simple_csr/SendRecvOp.h	0.00%	3 Missing ⚠️
alien/standalone/src/core/alien/utils/Trace.h	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1164      +/-   ##
==========================================
- Coverage   72.20%   72.20%   -0.01%     
==========================================
  Files        2030     2030              
  Lines      148255   148255              
==========================================
- Hits       107046   107045       -1     
- Misses      41209    41210       +1     

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