Make IO::Spec::Unix.tmpdir about 1.8x as fast
Make IO::Spec::Unix.tmpdir about 1.8x as fast

- use for loop with return instead of first()

softmoth/rakudo,tbrowder/rakudo,tony-o/rakudo,rakudo/rakudo,labster/rakudo,softmoth/rakudo,tbrowder/rakudo,tbrowder/rakudo,salortiz/rakudo,softmoth/rakudo,MasterDuke17/rakudo,nbrown/rakudo,nbrown/rakudo,rakudo/rakudo,tony-o/rakudo,labster/rakudo,labster/rakudo,nbrown/rakudo,salortiz/rakudo,nbrown/rakudo,tony-o/rakudo,rakudo/rakudo,salortiz/rakudo,MasterDuke17/rakudo,nbrown/rakudo,tony-o/rakudo,nbrown/rakudo,labster/rakudo,labster/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,tony-o/rakudo,tbrowder/rakudo,rakudo/rakudo,salortiz/rakudo,MasterDuke17/rakudo,salortiz/rakudo,rakudo/rakudo,salortiz/rakudo,softmoth/rakudo,labster/rakudo,MasterDuke17/rakudo,tony-o/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,softmoth/rakudo,rakudo/rakudo