This resolves a 25 year old P4 ticket: a NullPointerException is printed to System.err needlessly.
This resolution involves confirming that an ImageConsumer is still registered before every notification. I'll understand if this is rejected as unimportant, but I stumbled across this in the real world the other day and thought this was a simple enough bug to practice on. ------------- Commit messages: - 4200096: OffScreenImageSource.removeConsumer NullPointerException - 4200096: OffScreenImageSource.removeConsumer NullPointerException - 4200096: OffScreenImageSource.removeConsumer NullPointerException - 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.org/jdk/pull/13408/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13408&range=00 Issue: https://bugs.openjdk.org/browse/JDK-4200096 Stats: 178 lines in 2 files changed: 175 ins; 0 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/13408.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/13408/head:pull/13408 PR: https://git.openjdk.org/jdk/pull/13408
