[jdk17] RFR: 6766844: ByteArrayInputStream#read with a byte array of length 0 not consistent with InputStream when at EOF

[Brian Burkhalter]

Modify the specification of `java.io.ByteArrayInputStream#read(byte[],int,int)` to indicate that `-1` is returned instead of `0` when the stream is at its end and the third parameter, `len`, is zero.

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Commit messages:
 - 6766844: ByteArrayInputStream#read with a byte array of length 0 not consistent with InputStream when at EOF

Changes: https://git.openjdk.java.net/jdk17/pull/189/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=189&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-6766844
  Stats: 18 lines in 2 files changed: 12 ins; 1 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/189.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/189/head:pull/189

PR: https://git.openjdk.java.net/jdk17/pull/189