Fix a broken aspect of my change to the ArcXML code when cleaning it up:

missed an 'arcxml' -> 'response' change. Caught by dzwarg, r=me, (Pullup #2110) 


git-svn-id: http://svn.openlayers.org/trunk/openlayers@9412 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/ArcIMS.js

@@ -412,7 +412,7 @@ OpenLayers.Layer.ArcIMS = OpenLayers.Class(OpenLayers.Layer.Grid, {
                 
                 if (!arcxml.iserror()) {
                     // if the arcxml is not an error, call the callback with the features parsed
-                    callback.call(scope, arcxml.features);
+                    callback.call(scope, response.features);
                 } else {
                     // if the arcxml is an error, return null features selected
                     callback.call(scope, null);