tree b2ebd1f7a46d25c841a61df15915a35ae68e039b
parent 2a9c209c36f24ab8b70e6a3213a6fa6f54d1875a
author Nate Bosch <nbosch1@gmail.com> 1584485480 -0700
committer GitHub <noreply@github.com> 1584485480 -0700
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Fix rune iteration (#1198)

In `2.8.0-dev.15.0` the `Iterator.current` returns `-1` instead of
`null` when there is no value. A better fix would be to avoid reading
`_runes.current` if the last `moveNext` returned `false`, but this would
be a larger refactoring.