RFR: 8300024: Replace use of JNI_COMMIT mode with mode 0

[Chris Plummer]

On Thu, 12 Jan 2023 09:23:49 GMT, Daniel Jeliński <djelinski at openjdk.org> wrote:

> Please review this patch that fixes a few memory leaks in JNI code.
> 
> [The latest documentation](https://docs.oracle.com/en/java/javase/17/docs/specs/jni/functions.html#releaseprimitivetypearrayelements-routines) of JNI functions makes an explicit note about the use of JNI_COMMIT:
> 
>> If `JNI_COMMIT` is passed as the `mode` argument when `elems` is a copy of the elements in `array`, then a final call to *Release<PrimitiveType\>ArrayElements* passing a `mode` argument of "0" or `JNI_ABORT`, should be made to free the `elems` buffer
> 
> No new regression test. I manually verified the Linux fix using ClhdsbPstack test in root mode. Also, tier1-2 tests on mach5 continue to pass.

There are occurrences of JNI_COMMIT on macos in libawt and libsaproc. Is there a reason you did not fix these also?

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PR: https://git.openjdk.org/jdk/pull/11963