If json.loads fails, carry on without raising an exception. Fixes #298

[jessamynsmith]

Here is a possible refactoring to allow the library to carry on if json.loads fails.
(Note: I am not sure how to reproduce the error, so I haven't been able to test this yet. I have tested that posting works.)
Fixes #298

[RouxRC]

seems all good to me! thanks!

[plouj]

FYI: The original problem can be reproduced with bad auth. Eg:

from twitter.stream import TwitterStream
from twitter.oauth import OAuth

if __name__ == '__main__':
    auth = OAuth(
        consumer_key='bad-key',
    consumer_secret='bad-secret',
    token='bad-token',
    token_secret='bad-secret')
    stream = TwitterStream(auth=auth,
                           domain='userstream.twitter.com',
                           timeout=0,
                           block=True,
                           heartbeat_timeout=90)
    query_args = dict()
    query_args['track'] = "puppy"
    tweet_iter = stream.user(**query_args)
    for tweet in tweet_iter:
        pass

[RouxRC]

good and useful catch thanks!
FYI, when crashtesting the stream, I disconnected occasionally my RJ45 cable to test the impact :)

[jessamynsmith]

Ah, thank you! I actually get a slightly different error when I do that (perhaps it's a python version thing?) but I do get an error. In my own usage of the twitter library I was doing something a little different, so I didn't see any error at all even with bad credentials. I can confirm that the new version exhibits different behavior:
twitter.api.TwitterHTTPError: Twitter sent status 401 for URL:...

[Floby]

Thank you for this.
Any idea when we should expect this to be published on pypi ?

[sixohsix]

@Floby I just published this to PyPI, in version 1.17.1.

[Floby]

my failing prod and I thank you =)