kennethreitz/requests — pull request #849 by SecurityForUs (2012-09-11 19:42:14+00:00)
Title: Fixed issue with empty proxies being passed

Redone pull for fixing proxies using empty proxies as if they are real.

I.e.: if you had this set up:
```python
proxy = {"https" : ""}
```
Requests would try to connect via empty proxy ("") instead of through a regular connection.