message: Fix a condition used for collective ops.
diff: @@ -355,8 +355,8 @@ class MirroredExtended(distribute_lib.StrategyExtendedV1):
  self._initialize_single_worker(devices)
  if self._prefer_collective_ops and (
  isinstance(self._cross_device_ops, cross_device_ops_lib.NcclAllReduce)
  - or isinstance(self._inferred_cross_device_ops),
  - cross_device_ops_lib.NcclAllReduce):
  + or isinstance(self._inferred_cross_device_ops,
  + cross_device_ops_lib.NcclAllReduce)):
  self._use_collective_ops(devices)
  self._inferred_cross_device_ops = None
  logging.info("Using MirroredStrategy with devices %r", devices)
  