修复未启用私信情况下收到私信报错的bug

src/plugins/chat/bot.py

@@ -91,7 +91,8 @@ class ChatBot:
 
             if global_config.enable_pfc_chatting:
                 try:
-                    if groupinfo is None and global_config.enable_friend_chat:
+                    if groupinfo is None:
+                        if global_config.enable_friend_chat:
                             userinfo = message.message_info.user_info
                             messageinfo = message.message_info
                             # 创建聊天流
@@ -116,7 +117,8 @@ class ChatBot:
                 except Exception as e:
                     logger.error(f"处理PFC消息失败: {e}")
             else:
-                if groupinfo is None and global_config.enable_friend_chat:
+                if groupinfo is None:
+                    if global_config.enable_friend_chat:
                         # 私聊处理流程
                         # await self._handle_private_chat(message)
                         if global_config.response_mode == "heart_flow":