Remove dead code.
The second BN_is_zero test can never be true.
@@ -33,8 +33,6 @@ char *BN_bn2hex(const BIGNUM *a)
p = buf;
if (a->neg)
*(p++) = '-';
- if (BN_is_zero(a))
- *(p++) = '0';
for (i = a->top - 1; i >= 0; i--) {
for (j = BN_BITS2 - 8; j >= 0; j -= 8) {
/* strip leading zeros */
