LG Soundbar causes error

[david-kuehn]

Ran into an issue where having a Cast-enabled LG Soundbar on the network was leading to an error being thrown in dial.py. Here's the error:

Failed to determine cast type for host <unknown> (<urlopen error _ssl.c:1112: The handshake operation timed out>)
(services:{ServiceInfo(type='mdns', data='C4A-751af9ebec984e1ea7f3eb1f983a8e81._googlecast._tcp.local.')}

I looked at #619 and it looks like this might be a similar error. I dug into the code and it seemed that only the LG Soundbar was causing this error to be thrown. So, I unplugged the soundbar, and the error was gone. No idea what the root cause of the issue might have been, but here's the CastInfo of the soundbar, if it helps:

CastInfo(services={ServiceInfo(type='mdns', data='C4A-751af9ebec984e1ea7f3eb1f983a8e81._googlecast._tcp.local.')}, uuid=UUID('751af9eb-ec98-4e1e-a7f3-eb1f983a8e81'), model_name='C4A', friendly_name='LG Soundbar', host='192.168.1.34', port=8009, cast_type=None, manufacturer=None)