Properly catch exceptions in stream broadcast handlers

[HomerSp]

Description

This adds exception handling in the stream broadcast handler threads. This is necessary, because, for instance, if the host's network disconnects, sock.send_to would throw an exception - which would lead to a crash.

Issues Fixed or Closed

• Fixes Linux/PulseAudio General issue if network on host disconnects. #112

Type of Change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the documentation blocks for new or existing components