android.app.IntentReceiverLeaked

I just wanted to close my Android App properly.
Here is the exception message after I called Application.Quit():

Activity com.unity3d.player.UnityPlayerActivity has leaked IntentReceiver com.unity3d.player.HFPStatus$1@c4a8e61 that was originally registered here. Are you missing a call to unregisterReceiver()?
android.app.IntentReceiverLeaked: Activity com.unity3d.player.UnityPlayerActivity has leaked IntentReceiver com.unity3d.player.HFPStatus$1@c4a8e61 that was originally registered here. Are you missing a call to unregisterReceiver()?
at android.app.LoadedApk$ReceiverDispatcher.<init>(LoadedApk.java:1351)
at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:1132)
...

I found a solution that is adding this property {androidrocess=":UnityKillsMe"} in the manifest.xml file. But it totally didn't work.

Could I close my app with no exception?