fix: remove memory leak in vector.c

[vil02]

Description of Change

There is a memory leak in vector.c. This PR fixes it (and removes some trailing spaces). The Awesome CI Workflow passes on my end.

References

Checklist

• Added description of change
• PR title follows semantic commit guidelines
• Search previous suggestions before making a new one, as yours may be a duplicate.
• I acknowledge that all my contributions will be made under the project's license.

Notes:
Removes memory leak in vector.c.

[github-actions]

This pull request has been automatically marked as abandoned because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[vil02]

@Panquesito7, @tjgurwara99, @alexpantyukhin could some of you please add a dont-close or approved label?

[vil02]

Happy birthday #1302! I wish you that you will get lots of accepting reviews and that you will be merged some day!

[Artursrossi]

@vil02 It's incredible that this PR is from 2023 and still hasn't been approved. Isn't it possible that only 1 of the code reviewers to approve this ? Because there is a big stagnation in the C repository, compared to other languages.
And another thing, could you give your opinion on a PR I opened recently? (#1463)

[vil02]

Dear #1302,

today is your birthday again! On this special occasion I wish you:

• lots of likes,
• plenty of positive comments,
• approving reviews,
• and that you will get merged some day!

In short: happy birthday!