[video_player] fix Timer Leak (flutter#3119)

Author: creativecreatorormaybenot

packages/video_player/video_player/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.11.1+1
+
+* Fixed uncanceled timers when calling `play` on the controller multiple times before `pause`, which
+  caused value listeners to be called indefinitely (after `pause`) and more often than needed. 
+
 ## 0.11.1
 
 * Enable TLSv1.1 & TLSv1.2 for API 19 and below.

packages/video_player/video_player/lib/video_player.dart

@@ -391,6 +391,9 @@ class VideoPlayerController extends ValueNotifier<VideoPlayerValue> {
     }
     if (value.isPlaying) {
       await _videoPlayerPlatform.play(_textureId);
+
+      // Cancel previous timer.
+      _timer?.cancel();
       _timer = Timer.periodic(
         const Duration(milliseconds: 500),
         (Timer timer) async {

packages/video_player/video_player/pubspec.yaml

@@ -4,7 +4,7 @@ description: Flutter plugin for displaying inline video with other Flutter
 # 0.10.y+z is compatible with 1.0.0, if you land a breaking change bump
 # the version to 2.0.0.
 # See more details: https://github.com/flutter/flutter/wiki/Package-migration-to-1.0.0
-version: 0.11.1
+version: 0.11.1+1
 homepage: https://github.com/flutter/plugins/tree/master/packages/video_player/video_player
 
 flutter: