Fix listiness of Mixy.roll, as reported by colomon++
Fix listiness of Mixy.roll, as reported by colomon++

Gnouc/rakudo,MasterDuke17/rakudo,nbrown/rakudo,cognominal/rakudo,softmoth/rakudo,samcv/rakudo,tony-o/deb-rakudodaily,azawawi/rakudo,LLFourn/rakudo,jonathanstowe/rakudo,ab5tract/rakudo,LLFourn/rakudo,laben/rakudo,tbrowder/rakudo,samcv/rakudo,awwaiid/rakudo,tbrowder/rakudo,cygx/rakudo,softmoth/rakudo,awwaiid/rakudo,labster/rakudo,softmoth/rakudo,dankogai/rakudo,jonathanstowe/rakudo,Gnouc/rakudo,teodozjan/rakudo,sjn/rakudo,dwarring/rakudo,tbrowder/rakudo,azawawi/rakudo,cygx/rakudo,tony-o/rakudo,paultcochrane/rakudo,dwarring/rakudo,paultcochrane/rakudo,b2gills/rakudo,tony-o/deb-rakudodaily,salortiz/rakudo,raydiak/rakudo,sergot/rakudo,skids/rakudo,usev6/rakudo,dankogai/rakudo,rakudo/rakudo,tony-o/deb-rakudodaily,usev6/rakudo,MasterDuke17/rakudo,ab5tract/rakudo,samcv/rakudo,ungrim97/rakudo,samcv/rakudo,zhuomingliang/rakudo,skids/rakudo,usev6/rakudo,labster/rakudo,paultcochrane/rakudo,tony-o/deb-rakudodaily,tbrowder/rakudo,skids/rakudo,niner/rakudo,nunorc/rakudo,LLFourn/rakudo,MasterDuke17/rakudo,labster/rakudo,rakudo/rakudo,nunorc/rakudo,dankogai/rakudo,tony-o/rakudo,cognominal/rakudo,zostay/rakudo,laben/rakudo,dwarring/rakudo,sjn/rakudo,MasterDuke17/rakudo,salortiz/rakudo,Gnouc/rakudo,cygx/rakudo,jonathanstowe/rakudo,niner/rakudo,tbrowder/rakudo,Leont/rakudo,tony-o/deb-rakudodaily,teodozjan/rakudo,Gnouc/rakudo,sergot/rakudo,rakudo/rakudo,salortiz/rakudo,sjn/rakudo,jonathanstowe/rakudo,zostay/rakudo,cygx/rakudo,paultcochrane/rakudo,ab5tract/rakudo,tony-o/deb-rakudodaily,softmoth/rakudo,b2gills/rakudo,usev6/rakudo,lucasbuchala/rakudo,tony-o/rakudo,azawawi/rakudo,ugexe/rakudo,Leont/rakudo,labster/rakudo,lucasbuchala/rakudo,sergot/rakudo,rakudo/rakudo,retupmoca/rakudo,tony-o/rakudo,nunorc/rakudo,jonathanstowe/rakudo,ab5tract/rakudo,retupmoca/rakudo,rakudo/rakudo,skids/rakudo,ugexe/rakudo,salortiz/rakudo,ungrim97/rakudo,azawawi/rakudo,awwaiid/rakudo,niner/rakudo,MasterDuke17/rakudo,ungrim97/rakudo,ugexe/rakudo,tony-o/rakudo,ugexe/rakudo,nbrown/rakudo,laben/rakudo,raydiak/rakudo,laben/rakudo,paultcochrane/rakudo,lucasbuchala/rakudo,Leont/rakudo,dankogai/rakudo,zhuomingliang/rakudo,tony-o/deb-rakudodaily,zhuomingliang/rakudo,sergot/rakudo,LLFourn/rakudo,raydiak/rakudo,b2gills/rakudo,salortiz/rakudo,dwarring/rakudo,zostay/rakudo,samcv/rakudo,b2gills/rakudo,rakudo/rakudo,salortiz/rakudo,tbrowder/rakudo,nunorc/rakudo,cognominal/rakudo,softmoth/rakudo,LLFourn/rakudo,b2gills/rakudo,MasterDuke17/rakudo,teodozjan/rakudo,ungrim97/rakudo,raydiak/rakudo,nbrown/rakudo,zostay/rakudo,lucasbuchala/rakudo,cognominal/rakudo,labster/rakudo,retupmoca/rakudo,usev6/rakudo,sjn/rakudo,skids/rakudo,tony-o/rakudo,awwaiid/rakudo,ab5tract/rakudo,nbrown/rakudo,zhuomingliang/rakudo,niner/rakudo,azawawi/rakudo,ugexe/rakudo,nbrown/rakudo,Leont/rakudo,Gnouc/rakudo,dankogai/rakudo,teodozjan/rakudo,cognominal/rakudo,retupmoca/rakudo,Gnouc/rakudo,ungrim97/rakudo,sjn/rakudo,cygx/rakudo,labster/rakudo,nbrown/rakudo,awwaiid/rakudo,lucasbuchala/rakudo