strbuf_add_real_path(&path, get_worktree_git_dir(NULL));
strbuf_addstr(&path, "/HEAD");
strbuf_read_file(&contents, path.buf, 64);
- strbuf_stripspace(&contents, 0);
+ strbuf_stripspace(&contents, NULL);
strbuf_strip_suffix(&contents, "\n");
warning(_("HEAD points to an invalid (or orphaned) reference.\n"