minore fix

Author: mitesh77

best_flutter_ui_templates/lib/main.dart

@@ -4,12 +4,10 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'navigation_home_screen.dart';
 
-void main() {
+void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  SystemChrome.setPreferredOrientations(<DeviceOrientation>[
-    DeviceOrientation.portraitUp,
-    DeviceOrientation.portraitDown
-  ]).then((_) => runApp(MyApp()));
+  await SystemChrome.setPreferredOrientations(<DeviceOrientation>[DeviceOrientation.portraitUp, DeviceOrientation.portraitDown])
+      .then((_) => runApp(MyApp()));
 }
 
 class MyApp extends StatelessWidget {
@@ -18,8 +16,7 @@ class MyApp extends StatelessWidget {
     SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
       statusBarColor: Colors.transparent,
       statusBarIconBrightness: Brightness.dark,
-      statusBarBrightness:
-          Platform.isAndroid ? Brightness.dark : Brightness.light,
+      statusBarBrightness: Platform.isAndroid ? Brightness.dark : Brightness.light,
       systemNavigationBarColor: Colors.white,
       systemNavigationBarDividerColor: Colors.grey,
       systemNavigationBarIconBrightness: Brightness.dark,