fix cont=False handling in sync

anki/sync.py

@@ -122,7 +122,6 @@ class Syncer(object):
         rts = meta['ts']
         self.rmod = meta['mod']
         self.maxUsn = meta['usn']
-        self.mediaUsn = meta['musn']
         self.syncMsg = meta['msg']
         # this is a temporary measure to address the problem of users
         # forgetting which email address they've used - it will be removed

aqt/sync.py

@@ -367,8 +367,6 @@ class SyncThread(QThread):
             return self.fireEvent("clockOff")
         elif ret == "basicCheckFailed" or ret == "sanityCheckFailed":
             return self.fireEvent("checkFailed")
-        # note mediaUSN for later
-        self.mediaUsn = self.client.mediaUsn
         # full sync?
         if ret == "fullSync":
             return self._fullSync()