解决了代码规范问题：在if/else/for/while/do语句中必须使用大括号

[ghost]

What is the purpose of the change

XXXXX

Brief changelog

XXXXX

Verifying this change

XXXXX

Follow this checklist to help us incorporate your contribution quickly and easily:

• Make sure there is a GITHUB_issue filed for the change (usually before you start working on it). Trivial changes like typos do not require a GITHUB issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
• Format the pull request title like [Dubbo-XXX] Fix UnknownException when host config not exist #XXX. Each commit in the pull request should have a meaningful subject line and body.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add integration-test in test module.
• Run mvn clean install -DskipTests & mvn clean test-compile failsafe:integration-test to make sure unit-test and integration-test pass.
• If this contribution is large, please follow the Software Donation Guide.

[codecov-io]

Codecov Report

Merging #2528 into master will decrease coverage by 0.05%.
The diff coverage is 15.84%.

@@             Coverage Diff              @@
##             master    #2528      +/-   ##
============================================
- Coverage     55.01%   54.96%   -0.06%     
+ Complexity     5280     5276       -4     
============================================
  Files           573      573              
  Lines         25490    25502      +12     
  Branches       4526     4526              
============================================
- Hits          14024    14017       -7     
- Misses         9370     9385      +15     
- Partials       2096     2100       +4

Impacted Files	Coverage Δ	Complexity Δ
.../exchange/support/header/HeaderExchangeServer.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...dubbo/rpc/cluster/directory/AbstractDirectory.java	62.79% <0%> (ø)	12 <0> (ø)	⬇️
...exchange/support/header/HeaderExchangeChannel.java	79.16% <0%> (-4.35%)	35 <1> (ø)
.../dubbo/registry/integration/RegistryDirectory.java	0% <0%> (ø)	0 <0> (ø)	⬇️
.../dubbo/remoting/transport/netty4/NettyChannel.java	61.17% <0%> (-5.08%)	22 <0> (-1)
.../rpc/cluster/router/condition/ConditionRouter.java	71.64% <0%> (ø)	33 <0> (ø)	⬇️
...pc/cluster/loadbalance/LeastActiveLoadBalance.java	70.58% <0%> (ø)	6 <0> (ø)	⬇️
...org/apache/dubbo/registry/redis/RedisRegistry.java	32.76% <0%> (ø)	16 <0> (ø)	⬇️
...org/apache/dubbo/registry/dubbo/DubboRegistry.java	46.15% <0%> (ø)	8 <1> (ø)	⬇️
...pache/dubbo/registry/support/AbstractRegistry.java	67.91% <0%> (-0.26%)	64 <3> (ø)
... and 18 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update cd60e58...12c5b23. Read the comment docs.

[diecui1202]

good point.