[Bug] FATAL EXCEPTION: notifications is null

[golomb1]

The question is about version 5.0.0-b8.

I tried to fillter the the list using the method:
filterItems(@nonnull List unfilteredItems, @IntRange(from = 0) long delay)
however, after the delay has passed, and the user still editing his text, I got the following exception:

FATAL EXCEPTION: main
java.lang.NullPointerException: Attempt to invoke interface method 'java.util.Iterator java.util.List.iterator()' on a null object reference
at eu.davidea.flexibleadapter.FlexibleAdapter.executeNotifications(FlexibleAdapter.java:3481)
at eu.davidea.flexibleadapter.FlexibleAdapter.access$2200(FlexibleAdapter.java:94)
at eu.davidea.flexibleadapter.FlexibleAdapter$FilterAsyncTask.onPostExecute(FlexibleAdapter.java:4365)
at eu.davidea.flexibleadapter.FlexibleAdapter$FilterAsyncTask.onPostExecute(FlexibleAdapter.java:4323)
at android.os.AsyncTask.finish(AsyncTask.java:651)
at android.os.AsyncTask.-wrap1(AsyncTask.java)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:668)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

I think that the problem is the following line:

notifications = null;

at the end of the method:
private synchronized void executeNotifications();

I believes that changing this line to:
notifications = new ArrayList<>();
will solve the problem.
I would like to hear your opinion.
Thanks.

[davideas]

@golomb1, I already fixed this bug, a couple of weeks ago, see issue #191, please use the Snapshot version, which contains also more fixes. Read the bottom of the issue 39 for the changelog.