fix clippy lints

Author: cmeissl

smithay-drm-extras/src/drm_scanner.rs

@@ -116,8 +116,7 @@ where
             })
             .collect();
 
-        self.crtc_mapper
-            .map(drm, self.connectors.connectors().iter().map(|(_, info)| info));
+        self.crtc_mapper.map(drm, self.connectors.connectors().values());
 
         let added = scan
             .connected

src/backend/renderer/element/mod.rs

@@ -164,6 +164,7 @@ impl Id {
     ///
     /// Note: The id will be re-used once all instances of this [`Id`]
     /// are dropped.
+    #[allow(clippy::new_without_default)]
     pub fn new() -> Self {
         Id(InnerId::External(Arc::new(ExternalId::new())))
     }

src/utils/user_data.rs

@@ -326,6 +326,12 @@ mod list {
         }
     }
 
+    impl<T> Default for AppendList<T> {
+        fn default() -> Self {
+            Self::new()
+        }
+    }
+
     #[derive(Debug)]
     pub struct AppendListIterator<'a, T>(&'a AtomicPtr<Node<T>>);