fix findresource failure issue.

fix findresource failure issue.

this fix is from https://gerrit.iotivity.org/gerrit/#/c/12283/

Change-Id: I322ec7f7a833134f5849eb2157f0025273ebed06
Signed-off-by: jihwan.seo <jihwan.seo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/14411
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Habib Virji <habib.virji@samsung.com>
Reviewed-by: Larry Sachs <larry.j.sachs@intel.com>
Reviewed-by: Phil Coval <philippe.coval@osg.samsung.com>
Reviewed-by: Rick Bell <richard.s.bell@intel.com>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Reviewed-by: Ashok Babu Channa <ashok.channa@samsung.com>