Results 4 issues of PKEuS

As a follow-up to the discussion in PR4143, I am starting to provide a few fixes/improvements from LCppC to cppcheck.

As a follow-up to the discussion in PR4143, I am starting to provide a few fixes/improvements from LCppC to cppcheck.

As a follow-up to the discussion in PR4143, I am starting to provide a few fixes/improvements from LCppC to cppcheck.