fixed the prevent issues for CA android platform.

fixed the prevent issues for CA android platform.

-remove the logically dead code
-memory leak
-dereferencing null pointer

Change-Id: Ided9d1fc0a909f10309df47e23b04d7f1ca8db22
Signed-off-by: hyuna0213.jo <hyuna0213.jo@samsung.com>
Signed-off-by: jihwan.seo <jihwan.seo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2591
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Jaehong Jo <jaehong.jo@samsung.com>
Reviewed-by: Patrick Lankswert <patrick.lankswert@intel.com>