fix bug

app/plugins/brushflow/__init__.py

@@ -1767,7 +1767,8 @@ class BrushFlow(_PluginBase):
         """
         发送删除种子的消息
         """
-        if self._notify:
+        if not self._notify:
+            return
         self.chain.post_message(Notification(
             mtype=NotificationType.SiteMessage,
             title=f"【刷流任务删种】",
@@ -1780,6 +1781,8 @@ class BrushFlow(_PluginBase):
         """
         发送添加下载的消息
         """
+        if not self._notify:
+            return
         msg_text = ""
         if torrent.site_name:
             msg_text = f"站点：{torrent.site_name}"