Make sure return works within a throws? block

[drkameleon]

Describe the bug

Inspired by this:

    action: function [str, opts][
        not? throws? [
            _: read.json str

            if opts\strict [
                original: strip str
                converted: strip write.json ø _
                return original = converted
            ]

            return true ; <--- if we remove it, it works; but leaving it as-is, doesn't
        ]
    ]