Fix warnings/clippy lints

Author: ids1024

examples/dmabuf_formats.rs

@@ -89,8 +89,6 @@ fn main() {
             for entry in app_data.dmabuf_state.modifiers() {
                 print_format(entry);
             }
-
-            return;
         }
         Some(ver @ 4..) => {
             println!("Version `{}` of `zwp_linux_dmabuf_v1` supported. Showing default dmabuf feedback.\n", ver);

src/registry.rs

@@ -192,7 +192,7 @@ impl RegistryState {
     pub fn globals_by_interface<'a>(
         &'a self,
         interface: &'a str,
-    ) -> impl Iterator<Item = &Global> + 'a {
+    ) -> impl Iterator<Item = &'a Global> + 'a {
         self.globals.iter().filter(move |g| g.interface == interface)
     }
 

src/seat/keyboard/mod.rs

@@ -110,7 +110,7 @@ impl SeatState {
 #[allow(missing_debug_implementations)]
 pub struct Keymap<'a>(&'a xkb::Keymap);
 
-impl<'a> Keymap<'a> {
+impl Keymap<'_> {
     /// Get keymap as string in text format. The keymap should always be valid.
     pub fn as_string(&self) -> String {
         self.0.get_as_string(xkb::KEYMAP_FORMAT_TEXT_V1)

src/seat/pointer/mod.rs

@@ -555,7 +555,7 @@ pub enum ThemeSpec<'a> {
     System,
 }
 
-impl<'a> Default for ThemeSpec<'a> {
+impl Default for ThemeSpec<'_> {
     fn default() -> Self {
         Self::System
     }