zrlw opened a new pull request, #15430:
URL: https://github.com/apache/dubbo/pull/15430
## What is the purpose of the change?
The method setRegistry of AbstractInterfaceConfig could add null to the
registries list of the configuration object, and it will trigger NPE at
post-processing.
```
Caused by: java.lang.NullPointerException
at
org.apache.dubbo.config.AbstractInterfaceConfig.lambda$postProcessAfterScopeModelChanged$0(AbstractInterfaceConfig.java:270)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at
org.apache.dubbo.config.AbstractInterfaceConfig.postProcessAfterScopeModelChanged(AbstractInterfaceConfig.java:269)
at
org.apache.dubbo.config.ServiceConfigBase.postProcessAfterScopeModelChanged(ServiceConfigBase.java:121)
at
org.apache.dubbo.config.ServiceConfig.postProcessAfterScopeModelChanged(ServiceConfig.java:181)
at
org.apache.dubbo.config.AbstractConfig.setScopeModel(AbstractConfig.java:452)
```
see details at
https://github.com/apache/dubbo/actions/runs/15430607790/job/43427972014
## Checklist
- [x] Make sure there is a
[GitHub_issue](https://github.com/apache/dubbo/issues) field for the change.
- [x] Write a pull request description that is detailed enough to understand
what the pull request does, how, and why.
- [x] Write necessary unit-test to verify your logic correction. If the new
feature or significant change is committed, please remember to add sample in
[dubbo samples](https://github.com/apache/dubbo-samples) project.
- [x] Make sure gitHub actions can pass. [Why the workflow is failing and
how to fix it?](../CONTRIBUTING.md)
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