Gentoo glsa-check needs tweaking

[d4t4king]

It would appear that ALL (or, at least most) output from glsa-check is sent to STDERR. As is, lynis expects the string "This system is affected by the following GLSAs:", if the system has vulnerable packages (filtering that particular string out).

If the system does NOT have vulnerable packages, glsa-check send the following string to STDERR: "This system is not affected by any of the listed GLSAs". Since STDERR is redirected to STDOUT in th lynis check, it gives a false positive, even though the system is clean.

I have a 64-bit gentoo VM that I think has some outstanding GLSAs, I may be able to assist with this one.

[mboelen]

Thanks for the pull request, implemented. Closing this issue.