fixup! Use wrap strategy

Author: ndossche

ext/openssl/ossl_asn1.c

@@ -118,12 +118,6 @@ asn1str_to_str(const ASN1_STRING *str)
                       ASN1_STRING_length(str));
 }
 
-static VALUE
-ossl_bn_new_wrap_i(VALUE arg)
-{
-    return ossl_bn_new((BIGNUM *)arg);
-}
-
 /*
  * ASN1_INTEGER conversions
  */
@@ -132,22 +126,21 @@ asn1integer_to_num(const ASN1_INTEGER *ai)
 {
     BIGNUM *bn;
     VALUE num;
-    int st = 0;
 
     if (!ai) {
         ossl_raise(rb_eTypeError, "ASN1_INTEGER is NULL!");
     }
+
+    num = ossl_bn_new(BN_value_one());
+    bn = GetBNPtr(num);
+
     if (ASN1_STRING_type(ai) == V_ASN1_ENUMERATED)
-        bn = ASN1_ENUMERATED_to_BN(ai, NULL);
+        bn = ASN1_ENUMERATED_to_BN(ai, bn);
     else
-        bn = ASN1_INTEGER_to_BN(ai, NULL);
+        bn = ASN1_INTEGER_to_BN(ai, bn);
 
     if (!bn)
         ossl_raise(eOSSLError, NULL);
-    num = rb_protect(ossl_bn_new_wrap_i, (VALUE)bn, &st);
-    BN_free(bn);
-
-    if (st) rb_jump_tag(st);
 
     return num;
 }