Volunteers to see why two Simple API tests fail sometimes?

[Svante Schubert]

Jenkins states in
https://builds.apache.org/job/ODFToolkit/29/org.apache.odftoolkit$simple-odf/
that in build 29 there are two test failures in

  * org.odftoolkit.simple.meta.MetaDocumentStatisticTest.testGetRowCount
    
<https://builds.apache.org/job/ODFToolkit/29/org.apache.odftoolkit$simple-odf/testReport/junit/org.odftoolkit.simple.meta/MetaDocumentStatisticTest/testGetRowCount/>
  * org.odftoolkit.simple.meta.OfficeMetaTest.testGetLanguage
    
<https://builds.apache.org/job/ODFToolkit/29/org.apache.odftoolkit$simple-odf/testReport/junit/org.odftoolkit.simple.meta/OfficeMetaTest/testGetLanguage/>

although there had been no dependent changes.

Anyone, who has some time and curiosity to take a look at it?

Thanks,
Svante