t4017 (diff-retval): replace manual exit code check with test_expect_code

diff --git a/transport-helper.c b/transport-helper.c
index 191fbf798a5e5db1abeafc719e8ec0d986a1050c..acfc88e3f1f0e99863512bf2c6ea82f1283cc35d 100644 (file)
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -689,7 +689,7 @@ static int push_refs_with_export(struct transport *transport,
        struct child_process *helper, exporter;
        struct helper_data *data = transport->data;
        char *export_marks = NULL, *import_marks = NULL;
-       struct string_list revlist_args = { NULL, 0, 0 };
+       struct string_list revlist_args = STRING_LIST_INIT_NODUP;
        struct strbuf buf = STRBUF_INIT;
 
        helper = get_helper(transport);