Crash when resuming from background after playback ended

[danielzgtg]

Checklist

• I am using the latest version - 0.20.11
• I checked, but didn't find any duplicates (open OR closed) of this issue in the repo.
• I have read the contribution guidelines given at https://github.com/TeamNewPipe/NewPipe/blob/HEAD/.github/CONTRIBUTING.md.
• This issue contains only one bug. I will open one issue for every bug report I want to file.

Steps to reproduce the bug

1. Play a video in the background
2. Multitask away from NewPipe
3. Wait until it ends
4. Wait a long time, use the phone for something else, and even not use the phone for some time. (Basically give Android a potential reason to kill the app)
5. Open Android recents
6. Resume NewPipe

This bug doesn't happen all the time.

Actual behaviour

I saw an empty playback queue flash once or twice, then I saw the crash dialog.

Expected behavior

It should not crash

Screenshots/Screen recordings

I wasn't able to take a screenshot before I saw the error page

Logs

Exception

• User Action: ui error
• Request: App crash, UI failure
• Content Country: GB
• Content Language: en
• App Language: en_CA
• Service: none
• Version: 0.20.11
• OS: Linux Android 11 - 30

Crash log

java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.exoplayer2.PlaybackParameters org.schabi.newpipe.player.Player.getPlaybackParameters()' on a null object reference
	at org.schabi.newpipe.player.PlayQueueActivity.onCreateOptionsMenu(PlayQueueActivity.java:106)
	at android.app.Activity.onCreatePanelMenu(Activity.java:4212)
	at androidx.fragment.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:324)
	at androidx.appcompat.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:94)
	at androidx.appcompat.app.AppCompatDelegateImpl$AppCompatWindowCallback.onCreatePanelMenu(AppCompatDelegateImpl.java:3070)
	at androidx.appcompat.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:94)
	at androidx.appcompat.app.ToolbarActionBar.populateOptionsMenu(ToolbarActionBar.java:456)
	at androidx.appcompat.app.ToolbarActionBar$1.run(ToolbarActionBar.java:57)
	at android.os.Handler.handleCallback(Handler.java:938)
	at android.os.Handler.dispatchMessage(Handler.java:99)
	at android.os.Looper.loop(Looper.java:233)
	at android.app.ActivityThread.main(ActivityThread.java:8010)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:631)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:978)

---

Device info

• Android version/Custom ROM version: OP7Pro_O2_BETA_3
• Device model: OnePlus 7 Pro

[litetex]

Should be fixed by #8244