Fixed a crash on tablets when posting to task rabbit

astrid/plugin-src/com/todoroo/astrid/taskrabbit/TaskRabbitControlSet.java

@@ -207,6 +207,7 @@ public class TaskRabbitControlSet extends TaskEditControlSet implements Assigned
      */
 
     public void updateDisplay(JSONObject json) {
+        if (fragment.getActivity() != null) {
             String stateKey = fragment.getActivity().getString(R.string.tr_attr_state_label);
             if (json != null && json.has(stateKey)) {
                 String status = json.optString(stateKey);
@@ -223,6 +224,7 @@ public class TaskRabbitControlSet extends TaskEditControlSet implements Assigned
                 getDisplayView().setVisibility(View.GONE);
             }
         }
+    }
 
 
     protected void updateStatus(JSONObject json){