For existing attribute setAttributeNS changes value and prefix, make sure that prefix is not null before constructing the qName.
For existing attribute setAttributeNS changes value and prefix, make sure
that prefix is not null before constructing the qName.


git-svn-id: 21df804813e9d3638e43477f308dd0be51e5f30f@318873 13f79535-47bb-0310-9956-ffa450edef68

jimma/xerces,jimma/xerces,ronsigal/xerces,ronsigal/xerces,ronsigal/xerces,jimma/xerces,RackerWilliams/xercesj,RackerWilliams/xercesj,RackerWilliams/xercesj