fix build @c1c8783f02

Author: codex-corp

src/com/android/settings/cyanogenmod/NotificationDrawer.java

@@ -63,6 +63,7 @@ public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         addPreferencesFromResource(R.xml.notification_drawer);
+        PreferenceScreen prefScreen = getPreferenceScreen();
 
         // Notification drawer
         int collapseBehaviour = Settings.System.getInt(getContentResolver(),