[Rev 03] RFR: 8244418: MenuBar: IOOB exception on requestFocus on empty bar

[Ajit Ghaisas]

> Issue :
> https://bugs.openjdk.java.net/browse/JDK-8244418
> 
> Root Cause :
> Incorrect assumption about menu list size.
> 
> Fix :
> Added check for empty menu list before trying to access it.
> 
> Test :
> Added a unit test that fails before fix and passes after it.

Ajit Ghaisas has updated the pull request incrementally with one additional commit since the last revision:

  fix_review_comments

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

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/216/files
  - new: https://git.openjdk.java.net/jfx/pull/216/files/683849c0..331766a6

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/216/webrev.03
 - incr: https://webrevs.openjdk.java.net/jfx/216/webrev.02-03

  Stats: 19 lines in 3 files changed: 3 ins; 4 del; 12 mod
  Patch: https://git.openjdk.java.net/jfx/pull/216.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/216/head:pull/216

PR: https://git.openjdk.java.net/jfx/pull/216