Tests fail with perl 5.27.x

[eserte]

See subject. Overview of test reports: http://matrix.cpantesters.org/?dist=Devel-Debug-DBGp+0.21

[eserte]

It's not only 5.27.9, it fails also with other perl 5.27.x versions, but not for all. Changed issue title.

[mbarbon]

Thanks for the report!

I uploaded 0.22 to CPAN, it should fix the failures.