Re: [PATCH v2 11/16] rerere: let `rerere_path()` write paths into a caller-provided buffer

>  static timestamp_t rerere_last_used_at(struct rerere_id *id)
>  {
> +	struct strbuf buf = STRBUF_INIT;
>  	struct stat st;
> +	int ret;
> +
> +	ret = stat(rerere_path(&buf, id, "postimage"), &st) ? (time_t) 0 : st.st_mtime;
>  
> -	return stat(rerere_path(id, "postimage"), &st) ? (time_t) 0 : st.st_mtime;
> +	strbuf_release(&buf);
> +	return ret;
>  }