fix: avoid double loop

packages/svelte/src/compiler/phases/2-analyze/index.js

@@ -764,16 +764,12 @@ export function analyze_component(root, source, options) {
 						w.non_reactive_update(binding.node, name);
 						continue outer;
 					}
+				} else if (binding.kind === 'bindable_prop' && !binding.updated) {
+					// this check only applies to instance but we check here to avoid a second loop
+					w.bindable_prop_not_mutated(binding.node, name);
 				}
 			}
 		}
-
-		// warn on bindable props that are never mutated or reassigned
-		for (const [name, binding] of instance.scope.declarations) {
-			if (binding.kind === 'bindable_prop' && !binding.updated) {
-				w.bindable_prop_not_mutated(binding.node, name);
-			}
-		}
 	} else {
 		instance.scope.declare(b.id('$$props'), 'rest_prop', 'synthetic');
 		instance.scope.declare(b.id('$$restProps'), 'rest_prop', 'synthetic');