Address issue found in tests/06/06.js [Opened by bitHound]

 bitHound discovered 7 LintIssues in [tests/06/06.js](https://github.com/jgm1986/HTTP2-Testing/blob/f9a6b89c2f2816fba7533ef94dfa6b21cd4a9309/tests/06/06.js). For details go to [bitHound](https://www.bithound.io/github/jgm1986/HTTP2-Testing/blob/f9a6b89c2f2816fba7533ef94dfa6b21cd4a9309/tests/06/06.js). 
