geometry.resize returns obj for chaining. r=tschaub, (Closes #1931)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@8840 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Geometry/Collection.js

@@ -272,11 +272,15 @@ OpenLayers.Geometry.Collection = OpenLayers.Class(OpenLayers.Geometry, {
      *                 will have four times the area).
      * origin - {<OpenLayers.Geometry.Point>} Point of origin for resizing
      * ratio - {Float} Optional x:y ratio for resizing.  Default ratio is 1.
+     * 
+     * Returns:
+     * {OpenLayers.Geometry} - The current geometry. 
      */
     resize: function(scale, origin, ratio) {
         for(var i=0; i<this.components.length; ++i) {
             this.components[i].resize(scale, origin, ratio);
         }
+        return this;
     },
 
     /**