Fix incomplete BIO_dup_state() error check
BIO_dup_state() returns an error code <= 0 according to my analysis tool
and the documentation. Currently only == 0 is checked. Fix it by
changing the check condition.
CLA: trivial
@@ -886,7 +886,7 @@ BIO *BIO_dup_chain(BIO *in)
/* This will let SSL_s_sock() work with stdin/stdout */
new_bio->num = bio->num;
- if (!BIO_dup_state(bio, (char *)new_bio)) {
+ if (BIO_dup_state(bio, (char *)new_bio) <= 0) {
BIO_free(new_bio);
goto err;
}
