[IOT-1506] fix unsubscribe presence handler.
[IOT-1506] fix unsubscribe presence handler.

To set handle for unsubscribe presence is missed.

Change-Id: Ie98c10d97265e70b2b09d6fef7957e4ecb83e49b
Signed-off-by: jihwan.seo <69598d7552022c520cfdbefd16641727c7ff4ab5@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/13917
Tested-by: jenkins-iotivity <09cb29e8a2b473a2c978382eec13ee06fa017bda@opendaylight.org>
Reviewed-by: Larry Sachs <87b901be7a441bcf97cbe259c532df419aac788e@intel.com>
Reviewed-by: Ashok Babu Channa <72ac47ef856ca3d131a57cba474ebed48591eeff@samsung.com>

iotivity/iotivity,iotivity/iotivity,rzr/iotivity,iotivity/iotivity,rzr/iotivity,rzr/iotivity,iotivity/iotivity,iotivity/iotivity,rzr/iotivity,iotivity/iotivity,iotivity/iotivity,rzr/iotivity,rzr/iotivity,iotivity/iotivity,rzr/iotivity