[Misc] Apply SonarCloud rule cpp:S3529

Description

• Rule name: Freed memory should not be used
• Rule code: cpp:S3529
• Rule link: https://sonarcloud.io/organizations/cern-cta/rules?open=cpp%3AS3529&rule_key=cpp%3AS3529

Checklist

• Documentation reflects the changes made.
• Merge Request title is clear, concise, and suitable as a changelog entry. See our contributing docs

References

Closes #1390 (closed)