completely initialize pkcs11_secret_key_ops structure with NULL pointers

secretkey.c:225: warning: missing initializer
secretkey.c:225: warning: (near initialization for 'pkcs11_secret_key_ops.destroy_object')


git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@3524 c6295689-39f2-0310-b995-f0e70906c6a9

src/pkcs11/secretkey.c

@@ -222,4 +222,9 @@ struct sc_pkcs11_object_ops pkcs11_secret_key_ops = {
 	sc_pkcs11_secret_key_set_attribute,
 	sc_pkcs11_secret_key_get_attribute,
 	sc_pkcs11_any_cmp_attribute,
+	NULL,	/* destroy_object */
+	NULL,	/* get_size */
+	NULL,	/* sign */
+	NULL,	/* unwrap_key */
+	NULL	/* decrypt */
 };