refactor parse_client_caps calls to make sure we don't forget to call…

… one of the mixin

git-svn-id: https://xpra.org/svn/Xpra/trunk@18596 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/xpra/server/source/client_connection.py

@@ -234,15 +234,8 @@ def parse_hello(self, c):
         self.wants_features = c.boolget("wants_features", True)
         self.wants_default_cursor = c.boolget("wants_default_cursor", False)
 
-        ClientInfoMixin.parse_client_caps(self, c)
-        FilePrintMixin.parse_client_caps(self, c)
-        AudioMixin.parse_client_caps(self, c)
-        MMAP_Connection.parse_client_caps(self, c)
-        WindowsMixin.parse_client_caps(self, c)
-        EncodingsMixin.parse_client_caps(self, c)
-        InputMixin.parse_client_caps(self, c)
-        AVSyncMixin.parse_client_caps(self, c)
-        ClientDisplayMixin.parse_client_caps(self, c)
+        for mixin in ClientConnection.__bases__:
+            mixin.parse_client_caps(self, c)
 
         #general features:
         self.info_namespace = c.boolget("info-namespace")