Apply clippy suggestions

src/main.rs

@@ -46,7 +46,7 @@ fn start<'a>(arg_handler: &ArgHandler<'a>) {
     );
 
     // Load the image manager
-    let mut image_manager = ImageManager::load(arg_handler.image_paths(), &size);
+    let mut image_manager = ImageManager::load(&arg_handler.image_paths(), size);
 
     // Start the work in the image manager, to walk through the frames
     image_manager.work(&mut canvas, arg_handler.fps());