Fix bugs for result of static analizer.

Fix bugs for result of static analizer.

1. Initializatioin of local variable is added.
2. Invalid memory double free is removed on error handling.

Change-Id: I2d4c8460dd1e81ef88f6119f79deeae09c7f01c8
Signed-off-by: KIM JungYong <jyong2.kim@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/13201
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
(cherry picked from commit bae888047c3313e742f2b56cbab3366b118762e4)
Reviewed-on: https://gerrit.iotivity.org/gerrit/13259