After updating from 1.324 to 1.326, I get an NPE at the end of a build. I also
changed the directory structure and removed some directories in the hierarchy so
the location of the xml files is not the same.

The trace is:

[...]
BUILD SUCCESSFUL
Total time: 1 minute 42 seconds
Terminating xvnc.
[workspace] $ vncserver -kill :12
Killing Xvnc process ID 4037
Recording test results
FATAL: null
java.lang.NullPointerException
at hudson.tasks.junit.SuiteResult.getCase(SuiteResult.java:228)
at hudson.tasks.junit.CaseResult.getPreviousResult(CaseResult.java:318)
at hudson.tasks.junit.CaseResult.freeze(CaseResult.java:412)
at hudson.tasks.junit.SuiteResult.freeze(SuiteResult.java:248)
at hudson.tasks.junit.TestResult.freeze(TestResult.java:313)
at hudson.tasks.junit.TestResultAction.setResult(TestResultAction.java:78)
at hudson.tasks.junit.TestResultAction.<init>(TestResultAction.java:71)
at hudson.tasks.junit.JUnitResultArchiver.perform(JUnitResultArchiver.java:120)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:480)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:466)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:454)
at hudson.model.Build$RunnerImpl.post2(Build.java:146)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:438)
at hudson.model.Run.run(Run.java:1143)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:123)