
< int ossl_dsa_check_params(const DSA *dsa, int checktype, int *ret)
---
> int ossl_dsa_check_params(const DSA *dsa, int checktype, int *ret)
> {
>     if (dsa == NULL)
>     {
>         ERR_put_error(ERR_LIB_DSA, ERR_R_PASSED_NULL_PARAMETER);
>         return 0;
>     }
>     // rest of the function remains the same
