Avoid an unbox-as-Int failure in MapIter.
Avoid an unbox-as-Int failure in MapIter.

Note that this may not be quite the right semantics, but it's better
than exploding over the eventual unbox_i of Inf we can otherwise get.

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