RFR: 8287003: InputStreamReader::read() can return zero despite writing a char in the buffer

[Roger Riggs]

On Wed, 25 May 2022 23:08:38 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

> If only a leftover `char` remains in the stream, do not add `-1` to the return value in `lockedRead()`.

Marked as reviewed by rriggs (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/8895