[ISSUE #4065] Fix brokerName of msg is null in same case

[cserwen]

Make sure set the target branch to develop

What is the purpose of the change

fix #4065

Brief changelog

XX

Verifying this change

XXXX

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[codecov-commenter]

Codecov Report

Merging #4066 (9cd7a16) into 5.0.0-beta (d99a51c) will increase coverage by 0.02%.
The diff coverage is 50.00%.

@@               Coverage Diff                @@
##             5.0.0-beta    #4066      +/-   ##
================================================
+ Coverage         43.14%   43.16%   +0.02%     
+ Complexity         6028     6025       -3     
================================================
  Files               795      795              
  Lines             56823    56825       +2     
  Branches           7780     7780              
================================================
+ Hits              24515    24530      +15     
+ Misses            29114    29104      -10     
+ Partials           3194     3191       -3     

Impacted Files	Coverage Δ
...pl/consumer/ConsumeMessageConcurrentlyService.java	47.68% <0.00%> (-0.23%)	⬇️
...g/apache/rocketmq/client/impl/MQClientAPIImpl.java	24.48% <100.00%> (+0.06%)	⬆️
...rg/apache/rocketmq/common/stats/StatsSnapshot.java	84.61% <0.00%> (-15.39%)	⬇️
.../apache/rocketmq/common/stats/MomentStatsItem.java	38.09% <0.00%> (-9.53%)	⬇️
...ache/rocketmq/common/stats/MomentStatsItemSet.java	39.13% <0.00%> (-8.70%)	⬇️
...va/org/apache/rocketmq/common/stats/StatsItem.java	50.00% <0.00%> (-5.00%)	⬇️
...ava/org/apache/rocketmq/filter/util/BitsArray.java	59.82% <0.00%> (-2.57%)	⬇️
...rocketmq/broker/processor/PopMessageProcessor.java	39.10% <0.00%> (-0.54%)	⬇️
...a/org/apache/rocketmq/store/StoreStatsService.java	49.17% <0.00%> (ø)
...org/apache/rocketmq/store/DefaultMessageStore.java	52.35% <0.00%> (ø)
... and 8 more

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[coveralls]

Coverage decreased (-0.06%) to 47.203% when pulling 9cd7a16 on cserwen:broker_name_fix into d99a51c on apache:5.0.0-beta.

[coveralls]

Coverage decreased (-0.06%) to 47.203% when pulling 9cd7a16 on cserwen:broker_name_fix into d99a51c on apache:5.0.0-beta.