Fix lint

Author: hannesa2

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/notimportant/DemoBase.java

@@ -60,6 +60,7 @@ public void onBackPressed() {
 
     @Override
     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
         if (requestCode == PERMISSION_STORAGE) {
             if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                 saveToGallery();