bug: fixed pop() not working

@@ -25,8 +25,7 @@ class _BarcodeScannerWithControllerState
 
 
   @override
   @override
   Widget build(BuildContext context) {
   Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
+    return Scaffold(
       backgroundColor: Colors.black,
       backgroundColor: Colors.black,
       body: Builder(builder: (context) {
       body: Builder(builder: (context) {
         return Stack(
         return Stack(
@@ -150,7 +149,6 @@ class _BarcodeScannerWithControllerState
           ],
           ],
         );
         );
       }),
       }),
-      ),
     );
     );
   }
   }
 }
 }

@@ -16,8 +16,7 @@ class _BarcodeScannerWithoutControllerState
 
 
   @override
   @override
   Widget build(BuildContext context) {
   Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
+    return Scaffold(
       backgroundColor: Colors.black,
       backgroundColor: Colors.black,
       body: Builder(builder: (context) {
       body: Builder(builder: (context) {
         return Stack(
         return Stack(
@@ -64,7 +63,6 @@ class _BarcodeScannerWithoutControllerState
           ],
           ],
         );
         );
       }),
       }),
-      ),
     );
     );
   }
   }
 }
 }