fix msg

src/plugins/chat/message_sender.py

@@ -215,7 +215,7 @@ class MessageManager:
                         if (
                             msg.is_head
                             and msg.update_thinking_time() > 10
-                            and not message_earliest.is_private_message()  # 避免在私聊时插入reply
+                            and not msg.is_private_message()  # 避免在私聊时插入reply
                         ):
                             msg.set_reply()