Mark field final in double tap recognizer

bf9e2187 · Kris Giesing · c7ccf256 · bf9e2187
Commit bf9e2187 authored Oct 23, 2015 by Kris Giesing
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double_tap.dart packages/flutter/lib/src/gestures/double_tap.dart +1 -1

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--- a/packages/flutter/lib/src/gestures/double_tap.dart
+++ b/packages/flutter/lib/src/gestures/double_tap.dart
@@ -39,7 +39,7 @@ class DoubleTapGestureRecognizer extends DisposableArenaMember {

  Timer _doubleTapTimer;
  TapTracker _firstTap;
-  Map<int, TapTracker> _trackers = new Map<int, TapTracker>();
+  final Map<int, TapTracker> _trackers = new Map<int, TapTracker>();

  void addPointer(PointerInputEvent event) {
    // Ignore out-of-bounds second taps