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
(cherry picked from commit e81d0c40)
Reviewed-on: https://gerrit.libreoffice.org/3657Reviewed-by: Kohei Yoshida <kohei.yoshida@suse.de>
Tested-by: Kohei Yoshida <kohei.yoshida@suse.de>

oox/source/export/chartexport.cxx

@@ -2187,6 +2187,9 @@ void ChartExport::_exportAxis(
             XML_val, sTickLblPos,
             FSEND );
 
+    // shape properties
+    exportShapeProps( xAxisProp );
+
     pFS->singleElement( FSNS( XML_c, XML_crossAx ),
             XML_val, I32S( aAxisIdPair.nCrossAx ),
             FSEND );
@@ -2281,8 +2284,6 @@ void ChartExport::_exportAxis(
             FSEND );
     }
 
-    // shape properties
-    exportShapeProps( xAxisProp );
     // TODO: text properties
 
     pFS->endElement( FSNS( XML_c, nAxisType ) );