SystemUI: Fix Crash

msg: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
stacktrace: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.systemui/com.android.systemui.settings.BrightnessDialog}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3431)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3595)
	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:223)
	at android.app.ActivityThread.main(ActivityThread.java:7661)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
	at com.android.systemui.settings.BrightnessController.<init>(BrightnessController.java:318)
	at com.android.systemui.settings.BrightnessDialog.onCreate(BrightnessDialog.java:63)
	at android.app.Activity.performCreate(Activity.java:8000)
	at android.app.Activity.performCreate(Activity.java:7984)
	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3404)
1 file changed