address review comment.

a-siva · a-siva · commit 5c2323fc3ece · 2018-01-31T21:02:40.000-08:00
diff --git a/packages/flutter/lib/src/widgets/ticker_provider.dart b/packages/flutter/lib/src/widgets/ticker_provider.dart
@@ -233,7 +233,7 @@ abstract class TickerProviderStateMixin<T extends StatefulWidget> extends State<
 class _WidgetTicker extends Ticker {
   _WidgetTicker(TickerCallback onTick, this._creator, { String debugLabel }) : super(onTick, debugLabel: debugLabel);
 
-  final TickerProviderStateMixin<StatefulWidget> _creator;
+  final TickerProviderStateMixin _creator;
 
   @override
   void dispose() {
