fix(autoware_behavior_path_goal_planner_module): fix lateral_offset related warnings

[veqcc]

Description

This is a fix based on cppcheck variableScope and unreadVariable warnings

planning/behavior_path_planner/autoware_behavior_path_goal_planner_module/src/goal_searcher.cpp:164:12: style: The scope of the variable 'lateral_offset' can be reduced. [variableScope]
    double lateral_offset = 0.0;
           ^
planning/behavior_path_planner/autoware_behavior_path_goal_planner_module/src/goal_searcher.cpp:164:27: style: Variable 'lateral_offset' is assigned a value that is never used. [unreadVariable]
    double lateral_offset = 0.0;
                          ^

Tests performed

Not applicable.

Effects on system behavior

Not applicable.

Interface changes

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[kosuke55]

thanks!!

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 0.00%. Comparing base (507e3f4) to head (2e174a1).
Report is 101 commits behind head on main.

Files	Patch %	Lines
...ior_path_goal_planner_module/src/goal_searcher.cpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #7624       +/-   ##
==========================================
- Coverage   14.84%   0.00%   -14.85%     
==========================================
  Files        1999     243     -1756     
  Lines      139163   23168   -115995     
  Branches    43716    2951    -40765     
==========================================
- Hits        20661       0    -20661     
+ Misses      95731   23168    -72563     
+ Partials    22771       0    -22771     

Flag	Coverage Δ
differential	0.00% <0.00%> (?)
total	?

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