Fix Redox minifb build error.
use std::{cell::RefCell, char, collections::HashMap, rc::Rc, sync::Mutex};
-#[cfg(not(target_os = "redox"))]
use minifb;
-#[cfg(target_os = "redox")]
-use minifb_fix as minifb;
-
use spin_sleep::LoopHelper;
use crate::{prelude::*, render::*, utils::*};
