Fix crash in settings when hitting up

Bug: 10674964
Change-Id: Ibc344afa388403ebe802968ecf1532d42dc6a4b9
diff --git a/src/com/android/phone/CallFeaturesSetting.java b/src/com/android/phone/CallFeaturesSetting.java
index c185931..a1f73f2 100644
--- a/src/com/android/phone/CallFeaturesSetting.java
+++ b/src/com/android/phone/CallFeaturesSetting.java
@@ -2170,11 +2170,7 @@
     public boolean onOptionsItemSelected(MenuItem item) {
         final int itemId = item.getItemId();
         if (itemId == android.R.id.home) {  // See ActionBar#setDisplayHomeAsUpEnabled()
-            Intent intent = new Intent();
-            intent.setClassName(UP_ACTIVITY_PACKAGE, UP_ACTIVITY_CLASS);
-            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-            startActivity(intent);
-            finish();
+            onBackPressed();
             return true;
         }
         return super.onOptionsItemSelected(item);