style adjustment

src/compiler/compile/nodes/Element.ts

@@ -599,14 +599,14 @@ export default class Element extends Node {
 	}
 
 	validate_bindings_foreign() {
-		this.bindings
-			.filter(binding => binding.name !== 'this')
-			.forEach(binding => {
+		this.bindings.forEach(binding => {
+			if (binding.name !== 'this') {
 				this.component.error(binding, {
 					code: 'invalid-binding',
 					message: `'${binding.name}' is not a valid binding. Foreign elements only support bind:this`
 				});
-			});
+			}
+		});
 	}
 
 	validate_bindings() {