DragFeature test Broken in IE6. The tests all passed because this only caused

problems on destroy()/page unload, after all the tests had been run. Thanks 
for the review, tschaub. (Closes #923.)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@4035 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Handler/Feature.js

@@ -153,7 +153,9 @@ OpenLayers.Handler.Feature = OpenLayers.Class(OpenLayers.Handler, {
      */
     deactivate: function() {
         if(OpenLayers.Handler.prototype.deactivate.apply(this, arguments)) {
-            this.layer.div.style.zIndex = this.layerIndex;
+            if (this.layer && this.layer.div) {
+                this.layer.div.style.zIndex = this.layerIndex;
+            }    
             return true;
         } else {
             return false;