[Issue 20944] proper typedef refInt = ref int

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20944

--- Comment #3 from Stanislav Blinov <stanislav.blinov at gmail.com> ---
To that end: https://issues.dlang.org/show_bug.cgi?id=20945

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