Layer.Vector should destroy itself before its parent, r=fredj (closes #1536)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@7276 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Vector.js

@@ -191,8 +191,6 @@ OpenLayers.Layer.Vector = OpenLayers.Class(OpenLayers.Layer, {
      * Destroy this layer
      */
     destroy: function() {
-        OpenLayers.Layer.prototype.destroy.apply(this, arguments);  
-
         this.destroyFeatures();
         this.features = null;
         this.selectedFeatures = null;
@@ -202,6 +200,7 @@ OpenLayers.Layer.Vector = OpenLayers.Class(OpenLayers.Layer, {
         this.renderer = null;
         this.geometryType = null;
         this.drawn = null;
+        OpenLayers.Layer.prototype.destroy.apply(this, arguments);  
     },
 
     /**