fix: minor issues detected by github actions

[lklimek]

Issue being fixed or feature implemented

Github Actions detected a few minor issues in masternode voting code.

What was done?

Fixed issues.

Note: rs-dash-sdk tests fixed in #1927

How Has This Been Tested?

Run Github Actions: https://github.com/dashpay/platform/actions/runs/9807628771

Breaking Changes

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have added "!" to the title and described breaking changes in the corresponding section if my code contains any
• I have made corresponding changes to the documentation if needed

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone