assign None to receiver_name, which would otherwise be referenced before assignment, after a timeout:
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python3.7/threading.py", line 917, in _bootstrap_inner
self.run()
File "/usr/lib/python3.7/threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "/home/pi/Repos/opendrop/opendrop/cli.py", line 131, in _send_discover
discoverable = receiver_name is not None
UnboundLocalError: local variable 'receiver_name' referenced before assignment
assign None to receiver_name, which would otherwise be referenced before assignment, after a timeout:
This change fixes the problem above.
Great project!