Fixed seg fault in simpleclient sample app (Bug IOT-130)

Fixed seg fault in simpleclient sample app (Bug IOT-130)

Arduino server sample uses light representation which is different
from what simpleclient expects. Updated simpleclient to catch
exception in this scenario.

Change-Id: I3d5d2e2f7785a9345655bc347662efb7fd0927a2
Signed-off-by: Sachin Agrawal <sachin.agrawal@intel.com>
(cherry picked from commit 16aaed92f74fedf975a1631800200b8ffc526f7d)
Reviewed-on: https://gerrit.iotivity.org/gerrit/216
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Sudarshan Prasad <sudarshan.prasad@intel.com>