jbossas/jboss-as — pull request #4101 by BrentDouglas (2013-02-19 22:36:18+00:00)
Title: Clear PU references to validator factory on undeploy.

After undeploying an artifact the JPA service may still hold a reference to the modules classloader.

![jpa-reference](https://f.cloud.github.com/assets/1113687/172513/05ee72f4-7abe-11e2-9b75-f2384776be34.png)