FATAL EXCEPTION while setting overScrollMode=never

[SatishGhuge]

Hi,
I am using this library, and I don't want to show edges.
So I am setting "overScrollMode = never".
But app getting crashed. Please refer following logs.

Thanks.

E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.EdgeEffect.onPull(float)' on a null object reference
at com.wefika.horizontalpicker.HorizontalPicker.onTouchEvent(HorizontalPicker.java:495)
at android.view.View.dispatchTouchEvent(View.java:9994)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.widget.ScrollView.dispatchTouchEvent(ScrollView.java:645)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2841)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2516)
at com.android.internal.policy.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2823)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1848)
at android.app.Activity.dispatchTouchEvent(Activity.java:3047)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:71)
at com.android.internal.policy.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2784)
at android.view.View.dispatchPointerEvent(View.java:10229)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:5357)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5193)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4633)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4686)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4652)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4794)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4660)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4851)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4633)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4686)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4652)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4660)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4633)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:7330)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:7208)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:7169)
at android.view