Fix a .DEFINITE code-gen bug.
Fix a .DEFINITE code-gen bug.

Should not blindly re-use registers that may belong to locals.

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