Clippy fixes

src/key_handler.rs

@@ -47,7 +47,7 @@ impl KeyHandler {
         for (idx, is_down) in self.keys.iter().enumerate() {
             if *is_down {
                 unsafe {
-                    keys.push(std::mem::transmute(idx as u8));
+                    keys.push(std::mem::transmute::<u8, Key>(idx as u8));
                 }
             }
         }
@@ -85,7 +85,7 @@ impl KeyHandler {
         for (idx, is_down) in self.keys.iter().enumerate() {
             if *is_down && self.is_key_index_pressed(idx, repeat) {
                 unsafe {
-                    keys.push(std::mem::transmute(idx as u8));
+                    keys.push(std::mem::transmute::<u8, Key>(idx as u8));
                 }
             }
         }
@@ -99,7 +99,7 @@ impl KeyHandler {
         for (idx, is_down) in self.keys.iter().enumerate() {
             if !(*is_down) && self.is_key_index_released(idx) {
                 unsafe {
-                    keys.push(std::mem::transmute(idx as u8));
+                    keys.push(std::mem::transmute::<u8, Key>(idx as u8));
                 }
             }
         }

src/os/posix/wayland.rs

@@ -276,7 +276,7 @@ impl DisplayInfo {
 
         // Give the buffer to the surface and commit
         surface.attach(Some(buffer), 0, 0);
-        surface.damage(0, 0, i32::max_value(), i32::max_value());
+        surface.damage(0, 0, i32::MAX, i32::MAX);
         surface.commit();
 
         let xdg_config = Rc::new(RefCell::new(None));
@@ -350,7 +350,7 @@ impl DisplayInfo {
         let slice = unsafe {
             std::slice::from_raw_parts(
                 buffer.as_ptr() as *const u8,
-                buffer.len() * std::mem::size_of::<u32>(),
+                std::mem::size_of_val(buffer),
             )
         };
 
@@ -364,7 +364,7 @@ impl DisplayInfo {
 
         self.surface.attach(Some(buf), 0, 0);
         self.surface
-            .damage(0, 0, i32::max_value(), i32::max_value());
+            .damage(0, 0, i32::MAX, i32::MAX);
         self.surface.commit();
 
         Ok(())

src/os/posix/x11.rs

@@ -1200,7 +1200,7 @@ impl Window {
     }
 
     fn update_key_state(&mut self, sym: xlib::KeySym, is_down: bool) {
-        if sym > u32::max_value() as xlib::KeySym {
+        if sym > u32::MAX as xlib::KeySym {
             return;
         }