TypeError: startswith first arg must be bytes or a tuple of bytes, not str

[lazka]

https://sentry.io/quodlibet/quodlibet/issues/427924365/

TypeError: startswith first arg must be bytes or a tuple of bytes, not str
  File "quodlibet/browsers/iradio.py", line 800, in __add
    self.__add_station(uri)
  File "quodlibet/browsers/iradio.py", line 803, in __add_station
    irfs = add_station(uri)
  File "quodlibet/browsers/iradio.py", line 226, in add_station
    irfs = ParseM3U(sock)
  File "quodlibet/browsers/iradio.py", line 194, in ParseM3U
    if line.startswith("#EXTINF:"):

TypeError: startswith first arg must be bytes or a tuple of bytes, not str