fix little logical error

asyncpg/connect_utils.py

@@ -917,18 +917,11 @@ def _accept_read_only(should_be_read_only: bool):
  """
  async def can_be_used(connection):
  settings = connection.get_settings()
- is_read_only = getattr(settings, 'default_transaction_read_only', None)
- if is_read_only is not None:
- is_read_only = is_read_only == "on"
- else:
- is_read_only = False
- if should_be_read_only:
- if is_read_only:
- return True
- elif await _accept_in_hot_standby(True)(connection):
- return True
- return False
- return _accept_in_hot_standby(False)(connection)
+ is_read_only = getattr(settings, 'default_transaction_read_only', 'off')
+
+ if should_be_read_only and is_read_only == "on":
+ return True
+ return await _accept_in_hot_standby(should_be_read_only)(connection)
  return can_be_used