Enable and fix some more clippy lints (#7426)

One can never have too many lints

crates/egui-wgpu/src/renderer.rs

@@ -873,7 +873,7 @@ impl Renderer {
                             callbacks.push(c.0.as_ref());
                         } else {
                             log::warn!("Unknown paint callback: expected `egui_wgpu::Callback`");
-                        };
+                        }
                         acc
                     }
                 }

crates/egui-wgpu/src/winit.rs

@@ -328,7 +328,7 @@ impl Painter {
                     })
                     .create_view(&wgpu::TextureViewDescriptor::default()),
             );
-        };
+        }
     }
 
     pub fn on_window_resized(