fix pyZeroconf bug where getServiceInfo returns None.
This allows the discovery window to work with targets using Avahi to advertise their services.
(patch obtained from <http://sourceforge.net/tracker/?func=detail&aid=1600775&group_id=100909&atid=628622>)

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# module which import C files as strings

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import os

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from PLCObject import PLCObject, PLCprint

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import ServicePublisher