Fix openssl-3.0 issue involving ASN1 xxx_it

Use ASN1_ITEM_rptr() instead of taking the address of IDC_PEID_it.

openssl-3.0 changed the type of TYPE_it from `const ASN1_ITEM TYPE_it` to
`const ASN1_ITEM *TYPE_it(void)`. This was previously hidden behind
OPENSSL_EXPORT_VAR_AS_FUNCTION but in 3.0 only the function version is
available. This change should have been transparent to the application, but
only if the `ASN1_ITEM_rptr()` macro is used.

This change passes `make check` with both openssl 1.1 and 3.0.

Signed-off-by: Jeremi Piotrowski <jpiotrowski@microsoft.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/src/idc.c b/src/idc.c
index 6d87bd4..0a82218 100644
--- a/src/idc.c
+++ b/src/idc.c
@@ -189,7 +189,7 @@
 
 	idc->data->type = OBJ_nid2obj(peid_nid);
 	idc->data->value = ASN1_TYPE_new();
-	type_set_sequence(image, idc->data->value, peid, &IDC_PEID_it);
+	type_set_sequence(image, idc->data->value, peid, ASN1_ITEM_rptr(IDC_PEID));
 
         idc->digest->alg->parameter = ASN1_TYPE_new();
         idc->digest->alg->algorithm = OBJ_nid2obj(NID_sha256);