gdkx11: fix clippy warnings

Author: bilelmoussaoui

gdkx11/src/lib.rs

@@ -3,7 +3,7 @@
 // Licensed under the MIT license, see the LICENSE file or <https://opensource.org/licenses/MIT>
 
 #![allow(deprecated)]
-#![cfg_attr(feature = "cargo-clippy", allow(type_complexity))]
+#![allow(clippy::type_complexity)]
 
 #[macro_use]
 extern crate glib;
@@ -24,6 +24,7 @@ pub(crate) use x11::xlib;
 
 #[macro_use]
 mod rt;
+#[allow(clippy::let_and_return)]
 #[allow(unused_imports)]
 mod auto;