close_ignoring_EPIPE can trigger IOError

[Robert Collins]

Traceback (most recent call last):
  File "bin/amqp2disk", line 49, in <module>
    oopstools.scripts.amqp2disk.main()
  File "src/oopstools/scripts/amqp2disk.py", line 113, in main
    receiver.run_forever()
  File "eggs/oops_amqp-0.0.4-py2.6.egg/oops_amqp/receiver.py", line 86, in run_forever
    self._run_forever()
  File "eggs/oops_amqp-0.0.4-py2.6.egg/oops_amqp/receiver.py", line 117, in _run_forever
    close_ignoring_EPIPE(self.connection)
  File "eggs/oops_amqp-0.0.4-py2.6.egg/oops_amqp/utils.py", line 44, in close_ignoring_EPIPE
    return closable.close()
  File "eggs/amqplib-0.6.1-py2.6.egg/amqplib/client_0_8/connection.py", line 301, in close
    (10, 61), # Connection.close_ok
  File "eggs/amqplib-0.6.1-py2.6.egg/amqplib/client_0_8/abstract_channel.py", line 89, in wait
    self.channel_id, allowed_methods)
  File "eggs/amqplib-0.6.1-py2.6.egg/amqplib/client_0_8/connection.py", line 198, in _wait_method
    self.method_reader.read_method()
  File "eggs/amqplib-0.6.1-py2.6.egg/amqplib/client_0_8/method_framing.py", line 215, in read_method
    raise m
IOError: Socket closed

This can cause the consumer to die inappropriately during rabbit restarts.