Error with access logging and unix socket

[gleb-chipiga]

I run the server on unix socket with asyncio 0.22.5, python 3.5.2 and get the following error:

aiohttp.access ERROR 2016-08-16 13:46:34,653: Error in logging
Traceback (most recent call last):
  File "/var/www/polygon_venv/lib/python3.5/site-packages/aiohttp/helpers.py", line 405, in log
    [message, environ, response, transport, time]))
  File "/var/www/polygon_venv/lib/python3.5/site-packages/aiohttp/helpers.py", line 392, in _format_line
    return tuple(m(args) for m in self._methods)
  File "/var/www/polygon_venv/lib/python3.5/site-packages/aiohttp/helpers.py", line 392, in <genexpr>
    return tuple(m(args) for m in self._methods)
  File "/var/www/polygon_venv/lib/python3.5/site-packages/aiohttp/helpers.py", line 348, in _format_a
    return args[3].get_extra_info('peername')[0] if args[3] is not None \
IndexError: index out of range

With disabled access log or without unix socket problems not observed.

[popravich]

Duplicate of #816 (#816 (comment))
fixed in master

[lock]

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