apply patch to RxMemData for load/save data - tnx Rich, issue 0020413

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@2382 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/rx/rxdconst.pas

@@ -160,6 +160,8 @@ resourcestring
   sRxCopyOnlyMetadata      = 'Copy only metadata';
   sRxSourseDataset         = 'Sourse dataset';
 
+  sUnknownXMLDatasetFormat = 'Unknown XML Dataset format';
+
 const
   { The following strings should not be localized }
   sAction       = '.Action';