Use copy instead of getToken to get last token

Change-Id: I6603f108a3079dd2329b6b6b7f88289e0a913683
Reviewed-on: https://gerrit.libreoffice.org/65678
Tested-by: Jenkins
Reviewed-by: Matteo Casalin <matteo.casalin@yahoo.com>

dbaccess/source/core/dataaccess/myucp_datasupplier.cxx

@@ -160,8 +160,7 @@ DataSupplier::queryContent( sal_uInt32 _nIndex )
         {
             Reference< XContent > xContent;
             OUString sName = xId->getContentIdentifier();
-            sal_Int32 nIndex = sName.lastIndexOf('/') + 1;
-            sName = sName.getToken(0,'/',nIndex);
+            sName = sName.copy(sName.lastIndexOf('/')+1);
 
             m_pImpl->m_aResults[ _nIndex ]->xContent = m_pImpl->m_xContent->getContent(sName);