improve rtl support and prevent throw when locale is null

@@ -16,6 +16,7 @@ class MyApp extends StatelessWidget {
     return GetMaterialApp(
       debugShowCheckedModeBanner: false,
       enableLog: true,
+      //  locale: Locale('PT'),
       logWriterCallback: Logger.write,
       initialRoute: AppPages.INITIAL,
       getPages: AppPages.routes,

@@ -233,10 +233,10 @@ class GetMaterialApp extends StatelessWidget {
               ..addAll(navigatorObservers)),
             builder: (context, child) {
               return Directionality(
-                textDirection: rtlLanguages.contains(Get.locale.languageCode)
+                textDirection: rtlLanguages.contains(Get.locale?.languageCode)
                     ? TextDirection.rtl
                     : TextDirection.ltr,
-                child: builder(context, child),
+                child: builder == null ? child : builder(context, child),
               );
             },
             title: title ?? '',