Fixed warning about incorrect initializer.
Fixed warning about incorrect initializer.

The ip_mreq initialization was generating a warning.  This
corrects the initializer to properly initialize it as far as
the compiler is concerned.

Change-Id: Iea663e7d198dd23f7e9f6ae1050e12d9017db053
Signed-off-by: Erich Keane <ec9f61fe526c14bb62c55d7c978f025ee6b3583d@intel.com>

iotivity/iotivity,santais/iotivity_1.1.0,santais/iotivity,rzr/iotivity,tienfuc/iotivity-democlient-snap,tienfuc/iotivity-democlient-snap,iotivity/iotivity,santais/iotivity_1.1,santais/iotivity,santais/iotivity_1.1.0,santais/iotivity_1.1.0,rzr/iotivity,rzr/iotivity,santais/iotivity,iotivity/iotivity,kartben/iotivity,santais/iotivity_1.1.0,tienfuc/iotivity-democlient-snap,kartben/iotivity,kartben/iotivity,santais/iotivity,tienfuc/iotivity-democlient-snap,santais/iotivity_1.1,santais/iotivity_1.1.0,rzr/iotivity,santais/iotivity_1.1.0,WojciechLuczkow/iotivity,tienfuc/iotivity-democlient-snap,santais/iotivity_1.1,WojciechLuczkow/iotivity,kartben/iotivity,rzr/iotivity,WojciechLuczkow/iotivity,WojciechLuczkow/iotivity,santais/iotivity_1.1,tienfuc/iotivity-democlient-snap,santais/iotivity,rzr/iotivity,iotivity/iotivity,kartben/iotivity,santais/iotivity_1.1,iotivity/iotivity,kartben/iotivity,santais/iotivity_1.1,santais/iotivity,tienfuc/iotivity-democlient-snap,kartben/iotivity,santais/iotivity_1.1,tienfuc/iotivity-democlient-snap,iotivity/iotivity,tienfuc/iotivity-democlient-snap,WojciechLuczkow/iotivity,rzr/iotivity,santais/iotivity_1.1,WojciechLuczkow/iotivity,WojciechLuczkow/iotivity,tienfuc/iotivity-democlient-snap,santais/iotivity_1.1.0,iotivity/iotivity,iotivity/iotivity,santais/iotivity,WojciechLuczkow/iotivity,kartben/iotivity