[bugfix] Avoid NPE in XML/XQuery test runner if only the XML or XQuery tests are present
[bugfix] Avoid NPE in XML/XQuery test runner if only the XML or XQuery
tests are present

kohsah/exist,ljo/exist,wshager/exist,zwobit/exist,zwobit/exist,lcahlander/exist,wolfgangmm/exist,hungerburg/exist,windauer/exist,kohsah/exist,lcahlander/exist,jessealama/exist,ambs/exist,jensopetersen/exist,RemiKoutcherawy/exist,MjAbuz/exist,windauer/exist,adamretter/exist,wshager/exist,RemiKoutcherawy/exist,ambs/exist,olvidalo/exist,jensopetersen/exist,eXist-db/exist,joewiz/exist,dizzzz/exist,ljo/exist,wolfgangmm/exist,jensopetersen/exist,lcahlander/exist,jessealama/exist,hungerburg/exist,dizzzz/exist,wshager/exist,MjAbuz/exist,hungerburg/exist,RemiKoutcherawy/exist,jessealama/exist,adamretter/exist,zwobit/exist,windauer/exist,kohsah/exist,wshager/exist,hungerburg/exist,kohsah/exist,zwobit/exist,RemiKoutcherawy/exist,adamretter/exist,lcahlander/exist,patczar/exist,patczar/exist,joewiz/exist,ljo/exist,olvidalo/exist,kohsah/exist,eXist-db/exist,patczar/exist,dizzzz/exist,ambs/exist,joewiz/exist,hungerburg/exist,kohsah/exist,lcahlander/exist,jensopetersen/exist,jensopetersen/exist,dizzzz/exist,MjAbuz/exist,ljo/exist,eXist-db/exist,dizzzz/exist,opax/exist,adamretter/exist,wolfgangmm/exist,eXist-db/exist,wolfgangmm/exist,MjAbuz/exist,ljo/exist,RemiKoutcherawy/exist,wolfgangmm/exist,ambs/exist,joewiz/exist,ljo/exist,windauer/exist,olvidalo/exist,zwobit/exist,jessealama/exist,dizzzz/exist,ambs/exist,RemiKoutcherawy/exist,joewiz/exist,eXist-db/exist,wshager/exist,wshager/exist,lcahlander/exist,opax/exist,MjAbuz/exist,MjAbuz/exist,opax/exist,opax/exist,jessealama/exist,patczar/exist,wolfgangmm/exist,opax/exist,jensopetersen/exist,olvidalo/exist,adamretter/exist,jessealama/exist,eXist-db/exist,windauer/exist,ambs/exist,patczar/exist,olvidalo/exist,zwobit/exist,windauer/exist,joewiz/exist,adamretter/exist,patczar/exist