Fix concurrent modification crash

import com.android.systemui.statusbar.policy.HeadsUpManager;

import com.android.systemui.statusbar.policy.OnHeadsUpChangedListener;

import com.android.systemui.util.Assert;

import com.android.systemui.util.CopyOnLoopListenerSet;

import com.android.systemui.util.IListenerSet;

import dagger.Lazy;

import kotlinx.coroutines.ExperimentalCoroutinesApi;

import java.util.ArrayList;

import javax.inject.Inject;

/**

@ExperimentalCoroutinesApi @SysUISingleton

public final class DozeServiceHost implements DozeHost {

    private static final String TAG = "DozeServiceHost";

    private final ArrayList<Callback> mCallbacks = new ArrayList<>();

    private final IListenerSet<Callback> mCallbacks = new CopyOnLoopListenerSet<>();

    private final DozeLog mDozeLog;

    private final PowerManager mPowerManager;

    private boolean mAnimateWakeup;

     */

    public void fireSideFpsAcquisitionStarted() {

        Assert.isMainThread();

        for (int i = 0; i < mCallbacks.size(); i++) {

            mCallbacks.get(i).onSideFingerprintAcquisitionStarted();

        for (Callback callback : mCallbacks) {

            callback.onSideFingerprintAcquisitionStarted();

        }

    }

    @Override

    public void addCallback(@NonNull Callback callback) {

        Assert.isMainThread();

        mCallbacks.add(callback);

        mCallbacks.addIfAbsent(callback);

    }

    @Override