fix: uninitialized variables

[xygyo77]

Description

Of the clang-tidy pointers, the following items should be checked

• misc-unused-parameters
• cppcoreguidelines-init-variables (uninitialised variables)
• cppcoreguidelines-pro-type-member-init (uninitialised member variables)
• cppcoreguidelines-narrowing-conversions (precision loss)
  Code checks extracted two cases of code to be corrected in relation to cppcoreguidelines-init-variables.

Related links

https://tier4.atlassian.net/browse/RT2-738

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.05%. Comparing base (75e1c3f) to head (6260007).
Report is 18 commits behind head on main.

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Additional details and impacted files

@@             Coverage Diff             @@
##             main     #290       +/-   ##
===========================================
+ Coverage   25.02%   55.05%   +30.03%     
===========================================
  Files          58       28       -30     
  Lines        3321     2185     -1136     
  Branches     1085     1217      +132     
===========================================
+ Hits          831     1203      +372     
+ Misses       1756      702     -1054     
+ Partials      734      280      -454     

Flag	Coverage Δ
differential	55.05% <ø> (?)
total	?

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[ymski]

LGTM

[xygyo77]

This PR is not merged and closed as there are no operational problems without this modification.