tdf#119234 OOXML Shapes from Word fail to render

regression from
	commit 65e4a776
	simplify some OUString::copy calls
I got the params switched around

Change-Id: I68da0ae681f2b886e35f74bd72de0c482c843ae9
Reviewed-on: https://gerrit.libreoffice.org/58986
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
(cherry picked from commit df71ea1b)
Reviewed-on: https://gerrit.libreoffice.org/59000
(cherry picked from commit a05df174)

oox/source/vml/vmlshape.cxx

@@ -1015,7 +1015,7 @@ Reference< XShape > BezierShape::implConvertAndInsert( const Reference< XShapes
 {
     // If we have an 'x' in the last part of the path it means it is closed...
     sal_Int32 nPos = maShapeModel.maVmlPath.lastIndexOf(',');
-    if ( nPos != -1 && maShapeModel.maVmlPath.indexOf(nPos, 'x') != -1 )
+    if ( nPos != -1 && maShapeModel.maVmlPath.indexOf('x', nPos) != -1 )
     {
         const_cast<BezierShape*>( this )->setService( "com.sun.star.drawing.ClosedBezierShape" );
     }