fix clippy warnings

src/application.rs

@@ -113,7 +113,7 @@ impl Application {
         pw_sender: Sender<GtkMessage>,
     ) -> Self {
         let app: Application = glib::Object::builder()
-            .property("application-id", &"org.pipewire.Helvum")
+            .property("application-id", "org.pipewire.Helvum")
             .build();
 
         let imp = app.imp();

src/ui/graph/graph_view.rs

@@ -717,7 +717,7 @@ impl GraphView {
 
     pub(super) fn move_node(&self, widget: &Node, point: &Point) {
         let mut nodes = self.imp().nodes.borrow_mut();
-        let mut node = nodes
+        let node = nodes
             .get_mut(&widget.pipewire_id())
             .expect("Node is not on the graph");
 

src/ui/graph/link.rs

@@ -112,3 +112,9 @@ impl Link {
         self.set_property("active", active);
     }
 }
+
+impl Default for Link {
+    fn default() -> Self {
+        Self::new()
+    }
+}

src/ui/graph/node.rs

@@ -115,8 +115,8 @@ glib::wrapper! {
 impl Node {
     pub fn new(name: &str, pipewire_id: u32) -> Self {
         glib::Object::builder()
-            .property("name", &name)
-            .property("pipewire-id", &pipewire_id)
+            .property("name", name)
+            .property("pipewire-id", pipewire_id)
             .build()
     }
 

src/ui/graph/port.rs

@@ -125,8 +125,8 @@ impl Port {
     pub fn new(id: u32, name: &str, direction: Direction, media_type: Option<MediaType>) -> Self {
         // Create the widget and initialize needed fields
         let res: Self = glib::Object::builder()
-            .property("pipewire-id", &id)
-            .property("name", &name)
+            .property("pipewire-id", id)
+            .property("name", name)
             .build();
 
         let imp = res.imp();

src/ui/graph/zoomentry.rs

@@ -151,7 +151,7 @@ mod imp {
         fn update_zoom_factor_text(&self, zoom_factor: f64) {
             self.entry
                 .buffer()
-                .set_text(&format!("{factor:.0}%", factor = zoom_factor * 100.));
+                .set_text(format!("{factor:.0}%", factor = zoom_factor * 100.));
         }
     }
 }