change order to allow validation of chart part

My simple test file is finally valid but is still now shown in Excel.
There must be another bug in our exporter.

Change-Id: Ib55e5b32edc3a556e9081b3008df539275dc289b

oox/source/export/chartexport.cxx

@@ -2188,6 +2188,9 @@ void ChartExport::_exportAxis(
             XML_val, sTickLblPos,
             FSEND );
 
+    // shape properties
+    exportShapeProps( xAxisProp );
+
     pFS->singleElement( FSNS( XML_c, XML_crossAx ),
             XML_val, I32S( aAxisIdPair.nCrossAx ),
             FSEND );
@@ -2282,8 +2285,6 @@ void ChartExport::_exportAxis(
             FSEND );
     }
 
-    // shape properties
-    exportShapeProps( xAxisProp );
     // TODO: text properties
 
     pFS->endElement( FSNS( XML_c, nAxisType ) );