fixed the prevent issues for CA linux platform.

fixed the prevent issues for CA linux platform.

-remove the build warning
-memory free logic
-changed the structure initialization

Change-Id: Iab788102c0ea259fac54ae43c01fcb504ba8eec3
Signed-off-by: hyuna0213.jo <hyuna0213.jo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2679
Reviewed-by: Naga Ashok Jampani <jn.ashok@samsung.com>
Reviewed-by: Jaehong Jo <jaehong.jo@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Patrick Lankswert <patrick.lankswert@intel.com>