NullPointerException on void com.commonsware.cwac.cam2.CameraFragment.shutdown()

[asadullahilyas]

Steps to recreate this crash:

1. When it asks for permissions deny them
2. Press camera button at the bottom
3. It asks again for permission, deny it again
4. CRASH

java.lang.RuntimeException: Unable to stop activity {com.vish.app/com.commonsware.cwac.cam2.CameraActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.commonsware.cwac.cam2.CameraFragment.shutdown()' on a null object reference
at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:4165)
at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:4221)
at android.app.ActivityThread.-wrap6(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1538)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.commonsware.cwac.cam2.CameraFragment.shutdown()' on a null object reference
at com.commonsware.cwac.cam2.AbstractCameraActivity.onStop(AbstractCameraActivity.java:272)
at android.app.Instrumentation.callActivityOnStop(Instrumentation.java:1289)
at android.app.Activity.performStop(Activity.java:6854)
at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:4160)
at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:4221) 
at android.app.ActivityThread.-wrap6(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1538) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6119) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 

Let me also use this platform to ask for a feature. There should be a function that enables/disables media messaging. When disabled, you can only send text messages and there are no permissions asked when opening MessagingFragment

Thanks.