When pressing < o > key on a reddit post rtv crashes, "Can't pickle local object"

[lilyvM8]

Describe the bug
open rtv, scroll down a few posts, press the key to open a post (not sure if that's the actual key to open a post). rtv closes, I get a stack trace and your github account.
AttributeError: Can't pickle local object 'Terminal.open_browser.<locals>.open_url_silent'

Describe your environment
`Traceback (most recent call last):
File "/usr/local/Cellar/rtv/1.27.0_1/libexec/lib/python3.8/site-packages/rtv/main.py", line 223, in main
url = requests.head(
File "/usr/local/Cellar/rtv/1.27.0_1/libexec/lib/python3.8/site-packages/requests/api.py", line 101, in head
return request('head', url, **kwargs)
File "/usr/local/Cellar/rtv/1.27.0_1/libexec/lib/python3.8/site-packages/requests/api.py", line 60, in request
return session.request(method=method, url=url, **kwargs)
File "/usr/local/Cellar/rtv/1.27.0_1/libexec/lib/python3.8/site-packages/requests/sessions.py", line 519, in request
prep = self.prepare_request(req)
File "/usr/local/Cellar/rtv/1.27.0_1/libexec/lib/python3.8/site-packages/requests/sessions.py", line 452, in prepare_request
p.prepare(
File "/usr/local/Cellar/rtv/1.27.0_1/libexec/lib/python3.8/site-packages/requests/models.py", line 313, in prepare
self.prepare_url(url, params)
File "/usr/local/Cellar/rtv/1.27.0_1/libexec/lib/python3.8/site-packages/requests/models.py", line 387, in prepare_url
raise MissingSchema(error)
requests.exceptions.MissingSchema: Invalid URL 'update': No schema supplied. Perhaps you meant http://update?

rtv has crashed. Please report this traceback at:`

• Mojave 10.14.6 installed through homebrew, rtv had just been installed before I opened the program.)

[michael-lazar]

#710