<AWT Dev> RFR: 8257584: [macos] NullPointerException originating from LWCToolkit.java

[Alexander Zuev]

8257584: [macos] NullPointerException originating from LWCToolkit.java

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

Commit messages:
 - 8257584: [macos] NullPointerException originating from LWCToolkit.java
 - JDK-8256109: Create implementation for NSAccessibilityButton protocol
 - Merge pull request #5 from openjdk/master
 - Merge pull request #4 from openjdk/master
 - Merge pull request #3 from openjdk/master
 - Merge pull request #2 from openjdk/master
 - Merge pull request #1 from openjdk/master

Changes: https://git.openjdk.java.net/jdk/pull/1769/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1769&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257584
  Stats: 34 lines in 2 files changed: 33 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1769.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1769/head:pull/1769

PR: https://git.openjdk.java.net/jdk/pull/1769