Apply a patch from #657 to fix single file builds, broken by my style changes

a while back. Patch from Erik, reports from a couple people. Thanks!


git-svn-id: http://svn.openlayers.org/trunk/openlayers@3045 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Vector.js

@@ -7,6 +7,7 @@
  *
  * @requires OpenLayers/Layer.js
  * @requires OpenLayers/Renderer.js
+ * @requires OpenLayers/Feature/Vector.js
  */
 OpenLayers.Layer.Vector = OpenLayers.Class.create();
 OpenLayers.Layer.Vector.prototype =
@@ -69,7 +70,10 @@ OpenLayers.Layer.Vector.prototype =
      * Options renderer {Object}: Typically SVGRenderer or VMLRenderer.
      */
     initialize: function(name, options) {
-        this.style = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']);
+
+        var defaultStyle = OpenLayers.Feature.Vector.style['default'];
+        this.style = OpenLayers.Util.extend({}, defaultStyle);
+
         OpenLayers.Layer.prototype.initialize.apply(this, arguments);
 
         // allow user-set renderer, otherwise assign one