x11 calloop 2 (#13955)

Release Notes:

- N/A

---------

Co-authored-by: Max <max@zed.dev>

crates/gpui/src/platform/linux/headless/client.rs

@@ -22,7 +22,7 @@ impl HeadlessClient {
     pub(crate) fn new() -> Self {
         let event_loop = EventLoop::try_new().unwrap();
 
-        let (common, main_receiver) = LinuxCommon::new(Box::new(event_loop.get_signal()), None);
+        let (common, main_receiver) = LinuxCommon::new(event_loop.get_signal());
 
         let handle = event_loop.handle();