Fixed some warnings, appearing during clean install

[Jaklbela]

Fixed warnings in Skeleton test appearing during clean install: "the keyword return in this context means child::return"

[yegor256]

@rultor merge

[rultor]

@rultor merge

@yegor256 OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@yegor256 Done! FYI, the full log is here (took me 18min)

[yegor256]

@Jaklbela thanks!