tdf#112782: data-pilot-source is invalid in odf1.2 strict

Change-Id: Ie24c416cb9ba8de904bf6e725a60b62ce7787596
Reviewed-on: https://gerrit.libreoffice.org/65742
(cherry picked from commit 18b9f23f)
Reviewed-on: https://gerrit.libreoffice.org/65884
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

xmloff/source/chart/SchXMLExport.cxx

@@ -1202,7 +1202,7 @@ void SchXMLExportHelper_Impl::parseDocument( Reference< chart::XChartDocument >
         }
 
         Reference<chart2::data::XPivotTableDataProvider> xPivotTableDataProvider(xNewDoc->getDataProvider(), uno::UNO_QUERY);
-        if (xPivotTableDataProvider.is())
+        if (xPivotTableDataProvider.is() && nCurrentODFVersion > SvtSaveOptions::ODFVER_012)
         {
             OUString sPivotTableName = xPivotTableDataProvider->getPivotTableName();
             mrExport.AddAttribute(XML_NAMESPACE_LO_EXT, XML_DATA_PILOT_SOURCE, sPivotTableName);