Fix memory leaks

[Zvirovyi]

No description provided.

[specinfo-ua]

Remove commit ff5e34670f5bd1c2df0a98e4618dfeea924f3289. Memory free after cleanup label

[sonarcloud]

Quality Gate failed

Failed conditions

C Maintainability Rating on New Code (required ≥ A)

See analysis details on SonarCloud

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[Zvirovyi]

Okay, I have added new commit that fixes this issue.

But I must admit, that string(...) function does not free memory, and when you set this variable to null, you do have memory leak.

Example:

decodedEncapContentInfo.contentType = string(s_contype);
s_contype = nullptr;

will do memory leak.