build linux

Signed-off-by: fufesou <shuanglongchen@yeah.net>

src/server/video_service.rs

@@ -33,10 +33,11 @@ use std::{
     collections::HashSet,
     io::ErrorKind::WouldBlock,
     ops::{Deref, DerefMut},
-    sync::Once,
     time::{self, Duration, Instant},
 };
 #[cfg(windows)]
+use std::sync::Once;
+#[cfg(windows)]
 use virtual_display;
 
 pub const SCRAP_UBUNTU_HIGHER_REQUIRED: &str = "Wayland requires Ubuntu 21.04 or higher version.";