TRxDBLookupCombo - try to fix change DataField value on close lockup dataset

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@2805 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/rx/rxlookup.pas

@@ -1523,7 +1523,7 @@ begin
   if not (csDestroying in ComponentState) then
   begin
     if FListActive and Assigned(FDataField) then UpdateKeyValue
-    else KeyValueChanged;
+//    else KeyValueChanged;
   end;
 end;