fix showDLblsOverMax MSO2007 vs OOXML default value

Change-Id: Iee541f180d9c569246e7ca8271b65f0717877e4f

oox/source/drawingml/chart/chartspacefragment.cxx

@@ -105,8 +105,7 @@ ContextHandlerRef ChartSpaceFragment::onCreateContext( sal_Int32 nElement, const
                     mrModel.mbPlotVisOnly = rAttribs.getBool( XML_val, !bMSO2007Document );
                     return 0;
                 case C_TOKEN( showDLblsOverMax ):
-                    // default is 'false', not 'true' as specified
-                    mrModel.mbShowLabelsOverMax = rAttribs.getBool( XML_val, false );
+                    mrModel.mbShowLabelsOverMax = rAttribs.getBool( XML_val, !bMSO2007Document );
                     return 0;
                 case C_TOKEN( sideWall ):
                     return new WallFloorContext( *this, mrModel.mxSideWall.create() );

oox/source/drawingml/chart/chartspacemodel.cxx

@@ -29,7 +29,7 @@ ChartSpaceModel::ChartSpaceModel(bool bMSO2007Doc) :
     mnStyle( 2 ),
     mbAutoTitleDel( !bMSO2007Doc ), // difference between OOXML spec and MSO 2007
     mbPlotVisOnly( !bMSO2007Doc ),
-    mbShowLabelsOverMax( false ),
+    mbShowLabelsOverMax( !bMSO2007Doc ),
     mbPivotChart( false )
 {
 }