fix return code path in openssl_read_key
fix return code path in openssl_read_key

joylatten/opencryptoki,fingunter/OpenCryptoki,fingunter/OpenCryptoki,joylatten/opencryptoki,shpedoikal/opencryptoki,shpedoikal/opencryptoki,shpedoikal/opencryptoki,fingunter/OpenCryptoki,shpedoikal/opencryptoki,fingunter/OpenCryptoki,joylatten/opencryptoki,joylatten/opencryptoki,joylatten/opencryptoki