refs: pass NULL to resolve_ref_unsafe() if hash is not needed

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 52c63ebfdc737688a7d99f6be34c43cf80b1d011..65d89078ab885dce2838a4e01bca7205d804108a 100644 (file)
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -1207,11 +1207,10 @@ static void check_aliased_update(struct command *cmd, struct string_list *list)
        const char *dst_name;
        struct string_list_item *item;
        struct command *dst_cmd;
-       unsigned char sha1[GIT_MAX_RAWSZ];
        int flag;
 
        strbuf_addf(&buf, "%s%s", get_git_namespace(), cmd->ref_name);
-       dst_name = resolve_ref_unsafe(buf.buf, 0, sha1, &flag);
+       dst_name = resolve_ref_unsafe(buf.buf, 0, NULL, &flag);
        strbuf_release(&buf);
 
        if (!(flag & REF_ISSYMREF))