ucb: xmlns typo

Change-Id: I3c26cc881ac6d157464ccdff5d71683fd7b1de4a
Reviewed-on: https://gerrit.libreoffice.org/70682
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>

ucb/source/ucp/webdav/SerfPropFindReqProcImpl.cxx

@@ -111,7 +111,7 @@ serf_bucket_t * SerfPropFindReqProcImpl::createSerfRequestBucket( serf_request_t
                 /* <*propname* xmlns="*propns*" /> */
                 aBuffer.append( "<" );
                 aBuffer.append( thePropName.name );
-                aBuffer.append( " xmlnx=\"" );
+                aBuffer.append( " xmlns=\"" );
                 aBuffer.append( thePropName.nspace );
                 aBuffer.append( "\"/>" );
             }