refs: convert update_ref and refs_update_ref to use struct object_id

diff --git a/upload-pack.c b/upload-pack.c
index ec0eee8fc4322ddde7d3c11733f93d428b79f4b3..e25f725c0feaa57c9a09c976628217c99dfb5652 100644 (file)
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -965,11 +965,10 @@ static int find_symref(const char *refname, const struct object_id *oid,
 {
        const char *symref_target;
        struct string_list_item *item;
-       struct object_id unused;
 
        if ((flag & REF_ISSYMREF) == 0)
                return 0;
-       symref_target = resolve_ref_unsafe(refname, 0, unused.hash, &flag);
+       symref_target = resolve_ref_unsafe(refname, 0, NULL, &flag);
        if (!symref_target || (flag & REF_ISSYMREF) == 0)
                die("'%s' is a symref but it is not?", refname);
        item = string_list_append(cb_data, refname);