Use the right control variable for index access

Change-Id: Ic0b9f7bc62cbce52c7f870ba77d5463fd759566f

vcl/source/filter/wmf/enhwmf.cxx

@@ -428,7 +428,7 @@ void EnhWMFReader::ReadAndDrawPolyPolygon()
                 {
                     T nX(0), nY(0);
                     *pWMF >> nX >> nY;
-                    pPtAry[ i ] = Point( nX, nY );
+                    pPtAry[ j ] = Point( nX, nY );
                     ++nReadPoints;
                 }