not run window focus service on wayland (#9354)

Signed-off-by: 21pages <sunboeasy@gmail.com>

libs/scrap/src/x11/server.rs

@@ -1,3 +1,4 @@
+use hbb_common::libc;
 use std::ptr;
 use std::rc::Rc;
 
@@ -99,13 +100,18 @@ unsafe fn check_x11_shm_available(c: *mut xcb_connection_t) -> Result<(), Error>
     if reply.is_null() {
         // TODO: Should seperate SHM disabled from SHM not supported?
         return Err(Error::UnsupportedExtension);
-    } else if e.is_null() {
+    } else {
+        // https://github.com/FFmpeg/FFmpeg/blob/6229e4ac425b4566446edefb67d5c225eb397b58/libavdevice/xcbgrab.c#L229
+        libc::free(reply as *mut _);
+        if e.is_null() {
             return Ok(());
         } else {
+            libc::free(e as *mut _);
             // TODO: Does "This request does never generate any errors" in manual means `e` is never set, so we would never reach here?
             return Err(Error::Generic);
         }
     }
+}
 
 impl Drop for Server {
     fn drop(&mut self) {

src/server.rs

@@ -106,9 +106,12 @@ pub fn new() -> ServerPtr {
         if !display_service::capture_cursor_embedded() {
             server.add_service(Box::new(input_service::new_cursor()));
             server.add_service(Box::new(input_service::new_pos()));
+            if scrap::is_x11() {
+                // wayland does not support multiple displays currently
                 server.add_service(Box::new(input_service::new_window_focus()));
             }
         }
+    }
     Arc::new(RwLock::new(server))
 }