PDFBOX-6028: use first element instead of descriptor

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1926820 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

xmpbox/src/main/java/org/apache/xmpbox/xml/DomXmpParser.java

@@ -618,8 +618,8 @@ private AbstractStructuredType parseLiDescription(XMPMetadata xmp, QName descrip
         Types tt = ctype.type();
         AbstractStructuredType ast = instanciateStructured(tm, tt, descriptor.getLocalPart(), first.getNamespaceURI());
 
-        ast.setNamespace(descriptor.getNamespaceURI());
-        ast.setPrefix(descriptor.getPrefix());
+        ast.setNamespace(first.getNamespaceURI());
+        ast.setPrefix(first.getPrefix());
 
         PropertiesDescription pm;
         if (tt.isStructured())