UnboundLocalError: cannot access local variable 'addr' where it is not associated with a value

[tjorim]

I just updated to version f6a7b74 and my Sonicare was discovered. However when configuring said toothbrush, I got the following error:

This error originated from a custom integration.

Logger: custom_components.sonicare_bletb.config_flow
Source: components/esphome/bluetooth/client.py:317
Integration: sonicare_bletb
First occurred: 06:05:08 (1 occurrences)
Last logged: 06:05:08

Unexpected error
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/aioesphomeapi/client.py", line 570, in bluetooth_device_connect
    await event.wait()
  File "/usr/local/lib/python3.11/asyncio/locks.py", line 213, in wait
    await fut
asyncio.exceptions.CancelledError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/aioesphomeapi/client.py", line 603, in bluetooth_device_connect
    unsub()
  File "/usr/local/lib/python3.11/site-packages/aioesphomeapi/client.py", line 565, in unsub
    self._connection.remove_message_callback(on_msg, msg_types)
  File "/usr/local/lib/python3.11/site-packages/aioesphomeapi/connection.py", line 535, in remove_message_callback
    self._message_handlers[msg_type].remove(on_message)
    ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
KeyError: <class 'api_pb2.BluetoothDeviceConnectionResponse'>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/config/custom_components/sonicare_bletb/config_flow.py", line 64, in async_step_user
    await sonicare_ble.initialise()
  File "/usr/local/lib/python3.11/site-packages/sonicare_bletb/sonicare_bletb.py", line 265, in initialise
    await self._ensure_connected()
  File "/usr/local/lib/python3.11/site-packages/sonicare_bletb/sonicare_bletb.py", line 314, in _ensure_connected
    client = await establish_connection(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/bleak_retry_connector/__init__.py", line 344, in establish_connection
    await client.connect(
  File "/usr/src/homeassistant/homeassistant/components/bluetooth/wrappers.py", line 272, in connect
    connected = await super().connect(**kwargs)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/bleak/__init__.py", line 531, in connect
    return await self._backend.connect(**kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/esphome/bluetooth/client.py", line 102, in _async_wrap_bluetooth_operation
    return await func(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/esphome/bluetooth/client.py", line 317, in connect
    await self._client.bluetooth_device_connect(
  File "/usr/local/lib/python3.11/site-packages/aioesphomeapi/client.py", line 606, in bluetooth_device_connect
    "%s: Bluetooth device connection canceled but already unsubscribed",
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
UnboundLocalError: cannot access local variable 'addr' where it is not associated with a value