a564b70d51
Motivation: 8331248671b9c0ea07cf8dbdfa5d8d2f89fdf459 did make some changes to fix a race in ChannelInitializer when using with a custom EventExecutor. Unfortunally these where a bit racy and so the testcase failed sometimes. Modifications: - More correct fix when using a custom EventExecutor - Adjust the testcase to be more correct. Result: Proper fix for https://github.com/netty/netty/issues/8616.