[SCB-2466] Fix spotbugs WMI_WRONG_MAP_ITERATOR

[hezhangjian]

No description provided.

[codecov-commenter]

Codecov Report

Merging #2803 (f515be6) into master (7faf4bc) will increase coverage by 0.02%.
The diff coverage is 100.00%.

❗ Current head f515be6 differs from pull request most recent head f6c0cfb. Consider uploading reports for the commit f6c0cfb to get more accurate results

@@             Coverage Diff              @@
##             master    #2803      +/-   ##
============================================
+ Coverage     77.30%   77.32%   +0.02%     
  Complexity     1418     1418              
============================================
  Files          1616     1616              
  Lines         43315    43318       +3     
  Branches       3667     3667              
============================================
+ Hits          33483    33496      +13     
+ Misses         8297     8290       -7     
+ Partials       1535     1532       -3     

Impacted Files	Coverage Δ
...ecomb/config/common/ConfigurationChangedEvent.java	100.00% <100.00%> (ø)
...java/org/apache/servicecomb/config/ConfigUtil.java	88.81% <100.00%> (+0.15%)	⬆️
...ecomb/provider/pojo/PojoConsumerMetaRefresher.java	75.60% <0.00%> (-2.44%)	⬇️
...mb/config/ConfigCenterConfigurationSourceImpl.java	9.78% <0.00%> (-1.09%)	⬇️
...egistry/client/http/ServiceRegistryClientImpl.java	71.04% <0.00%> (+1.14%)	⬆️
...mb/serviceregistry/client/http/RestClientUtil.java	80.55% <0.00%> (+1.85%)	⬆️
...ache/servicecomb/foundation/common/net/IpPort.java	86.66% <0.00%> (+3.33%)	⬆️
.../servicecomb/registry/discovery/DiscoveryTree.java	100.00% <0.00%> (+3.50%)	⬆️
...b/core/invocation/timeout/PassingTimeStrategy.java	100.00% <0.00%> (+5.55%)	⬆️

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