RFR: 8359268: 3 JNI exception pending defect groups in 2 files [v4]

[Michael McMahon]

> Hi,
> 
> This change is a follow on from https://bugs.openjdk.org/browse/JDK-8348986
> In a couple of places, the new native code in that fix can potentially throw
> an exception while another exception is pending. This needs to be fixed.
> 
> Thanks,
> Michael

Michael McMahon has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains nine additional commits since the last revision:

 - Merge branch 'master' into JNI-8359268
 - DJ review
 - Merge branch 'JNI-8359268' of /Users/mimcmah/git/jdk/open into JNI-8359268
 - Merge branch 'master' into JNI-8359268
 - net_util.c update
 - Merge branch 'master' into JNI-8359268
 - windows compile error
 - update
 - impl fix

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/25898/files
  - new: https://git.openjdk.org/jdk/pull/25898/files/53588d06..1fdddfcb

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25898&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25898&range=02-03

  Stats: 882 lines in 43 files changed: 638 ins; 69 del; 175 mod
  Patch: https://git.openjdk.org/jdk/pull/25898.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25898/head:pull/25898

PR: https://git.openjdk.org/jdk/pull/25898