chart2 lok: give parent to data table dialog to tunnel it

Change-Id: Ie82a9a6d9b499e5da34e04f0c2f5fc7c164b098e
(cherry picked from commit cbbff5a2c08a55bfec27b2476fd848e972bfd572)
Reviewed-on: https://gerrit.libreoffice.org/51356Reviewed-by: Jan Holesovsky <kendy@collabora.com>
Tested-by: Jan Holesovsky <kendy@collabora.com>

chart2/source/controller/main/ChartController_EditData.cxx

@@ -18,6 +18,7 @@
  */
 
 #include "ChartController.hxx"
+#include "ChartWindow.hxx"
 #include "macros.hxx"
 
 #include "dlg_DataEditor.hxx"
@@ -52,7 +53,7 @@ void ChartController::executeDispatch_EditData()
             UndoLiveUpdateGuardWithData aUndoGuard(
                 SCH_RESSTR( STR_ACTION_EDIT_CHART_DATA ),
                 m_xUndoManager );
-            ScopedVclPtrInstance<DataEditor> aDataEditorDialog( nullptr, xChartDoc, m_xCC );
+            ScopedVclPtrInstance<DataEditor> aDataEditorDialog( m_pChartWindow.get(), xChartDoc, m_xCC );
             if (aDataEditorDialog->Execute() == RET_OK)
                 aDataEditorDialog->ApplyChangesToModel();
             aUndoGuard.commit();