coverage while upgrading linter

[anishbista60]

Which problem is this PR solving?

fixes #5974

Description of the changes

• fixing the problem created during upgrade of the linter

How was this change tested?

Checklist

• [ ] I have read https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
• [ ] I have signed all commits
• [ ] I have added unit tests for the new functionality
• [ ] I have run lint and test steps successfully
  • for jaeger: make lint test
  • for jaeger-ui: yarn lint and yarn test

[anishbista60]

@yurishkuro Done. Works fine in my machine.

[anishbista60]

@yurishkuro done