Fix warnings on Linux (#1004)

src/platform_impl/linux/wayland/keyboard.rs

@@ -127,11 +127,12 @@ pub fn init_keyboard(
             // In this case, we don't have the keymap information (it is
             // supposed to be serialized by the compositor using libxkbcommon)
 
-            // { variables to be captured by the closure
-            let mut target = None;
-            let my_sink = sink;
-            // }
             seat.get_keyboard(|keyboard| {
+                // { variables to be captured by the closure
+                let mut target = None;
+                let my_sink = sink;
+                // }
+
                 keyboard.implement_closure(
                     move |evt, _| match evt {
                         wl_keyboard::Event::Enter { surface, .. } => {

src/platform_impl/linux/wayland/pointer.rs

@@ -23,12 +23,12 @@ pub fn implement_pointer<T: 'static>(
     store: Arc<Mutex<WindowStore>>,
     modifiers_tracker: Arc<Mutex<ModifiersState>>,
 ) -> WlPointer {
-    let mut mouse_focus = None;
-    let mut axis_buffer = None;
-    let mut axis_discrete_buffer = None;
-    let mut axis_state = TouchPhase::Ended;
-
     seat.get_pointer(|pointer| {
+        let mut mouse_focus = None;
+        let mut axis_buffer = None;
+        let mut axis_discrete_buffer = None;
+        let mut axis_state = TouchPhase::Ended;
+
         pointer.implement_closure(
             move |evt, pointer| {
                 let mut sink = sink.lock().unwrap();

src/platform_impl/linux/wayland/window.rs

@@ -1,6 +1,5 @@
 use std::{
     collections::VecDeque,
-    io::{Seek, SeekFrom, Write},
     sync::{Arc, Mutex, Weak},
 };
 
@@ -18,8 +17,8 @@ use crate::{
 use smithay_client_toolkit::{
     output::OutputMgr,
     reexports::client::{
-        protocol::{wl_seat, wl_shm, wl_subsurface, wl_surface},
-        Display, NewProxy,
+        protocol::{wl_seat, wl_surface},
+        Display,
     },
     surface::{get_dpi_factor, get_outputs},
     window::{ConceptFrame, Event as WEvent, State as WState, Theme, Window as SWindow},