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SVACE which is one of static code analysis tools detects several defects
in easy setup. This patch fixes them.

Change-Id: Ie7e3eb692c58c586b6d0964cf6af24829c39eb11
Signed-off-by: Jihun Ha <jihun.ha@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/10021Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Madan Lanka <lanka.madan@samsung.com>