Fix the size calculation bugs while calling memset in secureresourceprovider.c

Fix the size calculation bugs while calling memset in secureresourceprovider.c

 1. Fix the 'sizeof(sizeof(...))' whiling calling memset().
 2. Change the 'OICMalloc + memset' to 'OICCalloc'.

Change-Id: Idbb14de5a3d4517bc55324f7a8a58d2079bf12e8
Signed-off-by: leechul <chuls.lee@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2897
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Sachin Agrawal <sachin.agrawal@intel.com>
(cherry picked from commit b4a723f299b3ccf44f7bc047eff06bb29abbed93)
Reviewed-on: https://gerrit.iotivity.org/gerrit/3179