Don't redraw the single tile if the layer is not visible; it will be redrawn

by setCenter since we clear the grid anyway.


git-svn-id: http://svn.openlayers.org/trunk/openlayers@6168 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Grid.js

@@ -670,7 +670,6 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
       if (this.singleTile) {
         this.clearGrid();
         this.setTileSize();
-        this.initSingleTile(this.map.getExtent());
       }
     },