[fix]: address warnings raised by CodeQL analysis

[robomics]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.83%. Comparing base (9d86b2e) to head (b6454d8).
Report is 9 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #319   +/-   ##
=======================================
  Coverage   81.83%   81.83%           
=======================================
  Files         231      231           
  Lines       28168    28169    +1     
  Branches     3470     3470           
=======================================
+ Hits        23050    23051    +1     
  Misses       3844     3844           
  Partials     1274     1274           

Flag	Coverage Δ
[tests	integration](https://app.codecov.io/gh/paulsengroup/hictk/pull/319/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=paulsengroup)	67.95% <ø> (+<0.01%)
[tests	unittests](https://app.codecov.io/gh/paulsengroup/hictk/pull/319/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=paulsengroup)	81.77% <ø> (+0.03%)

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