Revert changes to asset_loading example

examples/asset/asset_loading.rs

@@ -36,16 +36,13 @@ fn setup(
     );
 
     // All assets end up in their Assets<T> collection once they are done loading:
-    match meshes.get(&sphere_handle) {
-        Some(sphere) => {
-            // You might notice that this doesn't run! This is because assets load in parallel without
-            // blocking. When an asset has loaded, it will appear in relevant Assets<T>
-            // collection.
-            info!("{:?}", sphere.primitive_topology());
-        }
-        _ => {
-            info!("sphere hasn't loaded yet");
-        }
+    if let Some(sphere) = meshes.get(&sphere_handle) {
+        // You might notice that this doesn't run! This is because assets load in parallel without
+        // blocking. When an asset has loaded, it will appear in relevant Assets<T>
+        // collection.
+        info!("{:?}", sphere.primitive_topology());
+    } else {
+        info!("sphere hasn't loaded yet");
     }
 
     // You can load all assets in a folder like this. They will be loaded in parallel without