Fix unit tests for the `jpl` example when using YAP as the back-end Prolog compiler
Fix unit tests for the `jpl` example when using YAP as the back-end Prolog compiler

LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3