--- a/widget/nsBaseWidget.cpp
+++ b/widget/nsBaseWidget.cpp
@@ -1190,31 +1190,30 @@ public:
     , mAPZC(aAPZC)
     , mWidget(aWidget)
     , mInputBlockId(0)
   {
   }
 
   NS_IMETHOD Run() override
   {
-    mAPZResult = mAPZC->ReceiveInputEvent(mWheelInput, &mGuid, &mInputBlockId);
-    if (mAPZResult == nsEventStatus_eConsumeNoDefault) {
+    nsEventStatus result = mAPZC->ReceiveInputEvent(mWheelInput, &mGuid, &mInputBlockId);
+    if (result == nsEventStatus_eConsumeNoDefault) {
       return NS_OK;
     }
-    RefPtr<Runnable> r = new DispatchWheelEventOnMainThread(mWheelInput, mWidget, mAPZResult, mInputBlockId, mGuid);
+    RefPtr<Runnable> r = new DispatchWheelEventOnMainThread(mWheelInput, mWidget, result, mInputBlockId, mGuid);
     mMainMessageLoop->PostTask(r.forget());
     return NS_OK;
   }
 
 private:
   MessageLoop* mMainMessageLoop;
   ScrollWheelInput mWheelInput;
   RefPtr<IAPZCTreeManager> mAPZC;
   nsBaseWidget* mWidget;
-  nsEventStatus mAPZResult;
   uint64_t mInputBlockId;
   ScrollableLayerGuid mGuid;
 };
 
 nsEventStatus
 nsBaseWidget::DispatchInputEvent(WidgetInputEvent* aEvent)
 {
   MOZ_ASSERT(NS_IsMainThread());