[GitHub] flink issue #5747: [FLINK-9057][network] fix an NPE when cleaning up before ...

[tillrohrmann]

Github user tillrohrmann commented on the issue:

    https://github.com/apache/flink/pull/5747
  
    Thanks for the contribution @NicoK and the review @zhijiangW and 
@pnowojski. Merging this PR.


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