Coverity reported about two division by zero:
*** CID 350344: Incorrect expression (DIVIDE_BY_ZERO)
Although in fact these dividers will never be equal to 0,
adding explicit checks in lookup() to make coverity happy
will not affect the execution speed.
Fixes: 908be0651a5a ("app/test-sad: add test application for IPsec SAD")
Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>