update result type

rust-bindings/rust/tests/functions/mod.rs

@@ -12,7 +12,7 @@ fn list_repo_objects() {
     let mut commit_cnt = 0;
 
     let objects = repo.repo.list_objects( ffi::OSTREE_REPO_LIST_OBJECTS_ALL, NONE_CANCELLABLE).expect("List Objects");
-    for object in objects {
+    for (object, _items) in objects {
         match object.object_type()  {
             ObjectType::DirTree => { dirtree_cnt += 1; },
             ObjectType::DirMeta => { dirmeta_cnt += 1; },