RFR: 8285399: JNI exception pending in awt_GraphicsEnv.c:1432 [v2]

[Phil Race]

> This is a theoretical/potential case of calling JNI methods with a possible execption pending.
> As noted in the eval of the bug report, we no longer follow the practice that AWT_LOCK is
> called only at the start of a native method and AWT_UNLOCK at the end, if indeed we ever did.
> But it seems to be implied in how they are handling exceptions.

Phil Race has updated the pull request incrementally with one additional commit since the last revision:

  8285399

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8493/files
  - new: https://git.openjdk.java.net/jdk/pull/8493/files/16726225..67611235

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8493&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8493&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8493.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8493/head:pull/8493

PR: https://git.openjdk.java.net/jdk/pull/8493