Fix megalinter CPP warnings

[m-ringler]

Description

Fix the megalinter complaints of run https://github.com/ZEISS/czicompress/actions/runs/12010544734

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Run tests during build.

Checklist

• I followed the Contributing Guidelines.
• I did a self-review.
• I commented my code, particularly in hard-to-understand areas.
• I updated the documentation.
• I updated the patch version of czicompress
• Existing unit tests pass locally with my changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.93%. Comparing base (a0224b9) to head (6496bab).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #83   +/-   ##
=======================================
  Coverage   77.93%   77.93%           
=======================================
  Files          59       59           
  Lines        1917     1917           
  Branches      120      120           
=======================================
  Hits         1494     1494           
  Misses        399      399           
  Partials       24       24           

Components	Coverage Δ
czicompress	66.75% <ø> (ø)
czishrink	80.71% <ø> (ø)

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[ptahmose]

LGTM, thanks!