new_node: do not copy additional

src/libknot/rrset.c

@@ -776,19 +776,7 @@ int knot_rrset_copy(const knot_rrset_t *from, knot_rrset_t **to, mm_ctx_t *mm)
 		return ret;
 	}
 
-	if (from->additional) {
-		const size_t alloc_size =
-			knot_rrset_rr_count(from) * sizeof(void *);
-		(*to)->additional = mm_alloc(mm, alloc_size);
-		if ((*to)->additional == NULL) {
-			ERR_ALLOC_FAILED;
-			knot_rrset_free(to, mm);
-			return KNOT_ENOMEM;
-		}
-		memcpy((*to)->additional, from->additional, alloc_size);
-	} else {
-		(*to)->additional = NULL;
-	}
+	(*to)->additional = NULL;
 
 	return KNOT_EOK;
 }