Fix compile error

Author: daymxn

firebaseai/FirebaseAIExample/Features/Live/Views/AudioOutputToggle.swift

@@ -16,12 +16,12 @@ import SwiftUI
 
 struct AudioOutputToggle: View {
   @Binding var isEnabled: Bool
-  var onChange: (Bool) -> Void = { _ in }
+  var onChange: () -> Void = {}
 
   var body: some View {
     VStack(alignment: .leading, spacing: 5) {
-      Toggle("Audio Output", isOn: $isEnabled).onChange(of: isEnabled) { _, new in
-        onChange(new)
+      Toggle("Audio Output", isOn: $isEnabled).onChange(of: isEnabled) { _, _ in
+        onChange()
       }
 
       Text("""