From 27245ea6de427f9ae7ef042d4739e00698983cde Mon Sep 17 00:00:00 2001
From: Chris Bracken <chris@bracken.jp>
Date: Fri, 23 Feb 2018 16:35:32 -0800
Subject: [PATCH] Don't release on CFRef::Reset() to same instance
 (flutter/engine#4709)

---
 engine/src/flutter/fml/platform/darwin/cf_utils.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/engine/src/flutter/fml/platform/darwin/cf_utils.h b/engine/src/flutter/fml/platform/darwin/cf_utils.h
index e3e26adaed..b5a3d07441 100644
--- a/engine/src/flutter/fml/platform/darwin/cf_utils.h
+++ b/engine/src/flutter/fml/platform/darwin/cf_utils.h
@@ -26,6 +26,9 @@ class CFRef {
   }
 
   void Reset(T instance) {
+    if (instance_ == instance) {
+      return;
+    }
     if (instance_ != nullptr) {
       CFRelease(instance_);
     }