去除从网络加载头像，补充致谢信息

app/DataBase/msg.py

@@ -7,8 +7,6 @@ from pprint import pprint
 
 from app.log import logger
 
-DB = None
-cursor = None
 db_path = "./app/Database/Msg/MSG.db"
 lock = threading.Lock()
 

app/components/CAvatar.py

@@ -188,6 +188,7 @@ class CAvatar(QWidget):
         """设置url,可以是本地路径,也可以是网络地址
         :param url:
         """
+        return
         self.url = url
         self._get(url)
 

readme.md

@@ -288,6 +288,7 @@ python main.py
 # 🏆致谢
 
 * PC微信解密工具:[https://github.com/xaoyaoo/PyWxDump](https://github.com/xaoyaoo/PyWxDump)
+* PyQt组件库[https://github.com/PyQt5/CustomWidgets](https://github.com/PyQt5/CustomWidgets)
 * 我的得力助手:[ChatGPT](https://chat.openai.com/)
 
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