Clone the list of listeners before notifing any event.
Clone the list of listeners before notifing any event.

This is required, otherwise the listener cannot remove it-self from the
list of listeners during the notification.

Bug: 6692355
Change-Id: I07762feb4f9b97ec4b6148d2f604d53e266b84d7

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base