Made some bug fixes related to unassigned variables

apithreads.py

@@ -235,11 +235,11 @@ class GetUserInfo(ApiThread):
         try:
             with self.api.lock:
                 user = self.api.GetUser(screen_name)
+            avcache.add_to_cache(user)
         except (HTTPError, URLError):
             verified = False
+            user = None
 
-        avcache.add_to_cache(user)
-            
         gtk.gdk.threads_enter()
         try:
             self.pane.user_box.update_info(user)
@@ -417,7 +417,7 @@ def results_to_statuses(results, api):
         status.id = result.id
         status.user = User()
         status.user.screen_name = result.from_user
-        status.user.name = ""
+        status.user.name = ''
         status.user.profile.image_url = result.profile_image_url
         status.in_reply_to_screen_name = result.to_user
         # The Twitter Search API has different timestamps than the
@@ -461,6 +461,8 @@ def dms_to_statuses(direct_messages):
         status.created_at = dm.created_at
         status.text = dm.text
         status.source = None
+        status.in_reply_to_status_id = None
+        status.in_reply_to_screen_name = None
         statuses.append(status)
     return statuses