Commit small change to destroy events objects when destroying objects with

events. This removes a number of minor memory leaks with creating/destroying
popups, layers, features, and markers.


git-svn-id: http://svn.openlayers.org/trunk/openlayers@2894 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

tests/test_Events.html

@@ -212,7 +212,8 @@
         t.eq(OpenLayers.Event.observers.length,
              start + OpenLayers.Events.prototype.BROWSER_EVENTS.length + 1,
              "construction increases the number of event observers");
-        events = events.destroy();
+        events.destroy();
+        events = null;
         t.eq(OpenLayers.Event.observers.length, start,
              "destruction restores the number of event observers");
     }