available = bio_nread0(bio, buf);
if (num > available)
num = available;
- if (num <= 0)
+ if (num == 0)
return num;
b = bio->ptr;
space = bio_nwrite0(bio, buf);
if (num > space)
num = space;
- if (num <= 0)
+ if (num == 0)
return num;
b = bio->ptr;
assert(b != NULL);