DRY things slightly

lms/djangoapps/django_comment_client/forum/views.py

@@ -171,14 +171,14 @@ def single_thread(request, course_id, discussion_id, thread_id):
     cc_user = cc.User.from_django_user(request.user)
     user_info = cc_user.to_dict()
 
-    if request.is_ajax():
-
     try:
         thread = cc.Thread.find(thread_id).retrieve(recursive=True, user_id=request.user.id)
     except (cc.utils.CommentClientError, cc.utils.CommentClientUnknownError) as err:
         log.error("Error loading single thread.")
         raise Http404
 
+    if request.is_ajax():
+
         courseware_context = get_courseware_context(thread, course)
 
         annotated_content_info = utils.get_annotated_content_infos(course_id, thread, request.user, user_info=user_info)
@@ -199,7 +199,6 @@ def single_thread(request, course_id, discussion_id, thread_id):
 
         try:
             threads, query_params = get_threads(request, course_id)
-            thread = cc.Thread.find(thread_id).retrieve(recursive=True, user_id=request.user.id)
             threads.append(thread.to_dict())
         except (cc.utils.CommentClientError, cc.utils.CommentClientUnknownError) as err:
             log.error("Error loading single thread.")