RFR: 8264162: PickResult.toString() is missing the closing square bracket [v2]

[Kevin Rushforth]

> Simple fix to add a missing closing bracket to `PickResult::toString`. This includes a unit test that fails without the fix and passes with the fix.

Kevin Rushforth has updated the pull request incrementally with one additional commit since the last revision:

  Address review feedback: fix indentation in PickResult::toString, add comment to the test

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Changes:
  - all: https://git.openjdk.java.net/jfx/pull/443/files
  - new: https://git.openjdk.java.net/jfx/pull/443/files/7b037029..ebad8e26

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jfx&pr=443&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jfx&pr=443&range=00-01

  Stats: 9 lines in 2 files changed: 6 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jfx/pull/443.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/443/head:pull/443

PR: https://git.openjdk.java.net/jfx/pull/443