XINFO gives KeyError

[violet-black]

Direct execution of XINFO STREAM via execute_command gives a KeyError since a parser expects a string key but receives a byte-string instead.

def parse_xinfo_stream(response):
    res = pairs_to_dict(response)
    if res['first-entry'] and len(res['first-entry']) > 0:

Redeclaring pairs_to_dict to:

def pairs_to_dict(response):
    "Create a dict given a list of key/value pairs"
    it = iter(response)
    return {k.decode(): v for k, v in zip(it, it)}

resolves the issue but I'm unsure if it may backfire somewhere else in the code :-)