Emit return value on unexpected success.
Emit return value on unexpected success.

Yubico/pkcs11test,Yubico/pkcs11test,agrandville/pkcs11test,Yubico/pkcs11test,agrandville/pkcs11test,google/pkcs11test,google/pkcs11test,google/pkcs11test,google/pkcs11test,Yubico/pkcs11test