}
n = ssh1_read_bignum(p, len, result ? &result->modulus : NULL);
- if (n < 0 || bignum_bitcount(result->modulus) == 0) return -1;
+ if (n < 0 || (result && bignum_bitcount(result->modulus) == 0)) return -1;
if (result)
result->bytes = n - 2;
if (keystr)