Fix checkstyle

[yanghang8612]

No description provided.

[codecov-commenter]

Codecov Report

Merging #4025 (7caa089) into release_v4.4.0 (33ba890) will decrease coverage by 0.12%.
The diff coverage is n/a.

@@                 Coverage Diff                  @@
##             release_v4.4.0    #4025      +/-   ##
====================================================
- Coverage             53.44%   53.32%   -0.13%     
+ Complexity             7244     7230      -14     
====================================================
  Files                   768      768              
  Lines                 43674    43674              
  Branches               4743     4743              
====================================================
- Hits                  23342    23287      -55     
- Misses                18485    18541      +56     
+ Partials               1847     1846       -1     

Impacted Files	Coverage Δ
...n/common/net/udp/message/discover/PongMessage.java	0.00% <0.00%> (-90.00%)	⬇️
.../java/org/tron/core/consensus/BlockHandleImpl.java	63.15% <0.00%> (-15.79%)	⬇️
...src/main/java/org/tron/core/db/PendingManager.java	57.14% <0.00%> (-10.72%)	⬇️
...tron/common/overlay/discover/node/NodeHandler.java	53.22% <0.00%> (-9.68%)	⬇️
...udp/message/discover/DiscoverMessageInspector.java	21.62% <0.00%> (-8.11%)	⬇️
.../java/org/tron/common/net/udp/message/Message.java	56.52% <0.00%> (-4.35%)	⬇️
...rc/main/java/org/tron/consensus/dpos/DposTask.java	85.96% <0.00%> (-3.51%)	⬇️
.../tron/common/overlay/discover/table/NodeTable.java	90.76% <0.00%> (-3.08%)	⬇️
...ay/discover/node/statistics/MessageStatistics.java	91.24% <0.00%> (-2.92%)	⬇️
.../src/main/java/org/tron/core/ChainBaseManager.java	91.85% <0.00%> (-1.49%)	⬇️
... and 6 more

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