From 114e15cb978208018a4a5eb774c28f129d28666f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=B0=AD=E5=9F=B9?= <465821361@qq.com>
Date: Mon, 12 Nov 2018 20:11:46 +0800
Subject: [PATCH] release the CGImageRef object

maybe you forget to release the extendedImage when frameData is not nil
---
 YYImage/YYImageCoder.m | 1 +
 1 file changed, 1 insertion(+)

diff --git a/YYImage/YYImageCoder.m b/YYImage/YYImageCoder.m
index 66cf46e..f537e49 100644
--- a/YYImage/YYImageCoder.m
+++ b/YYImage/YYImageCoder.m
@@ -2561,6 +2561,7 @@ - (NSData *)_encodeAPNG {
             CFRelease(extendedImage);
             return nil;
         }
+        CFRelease(extendedImage);
         pngDatas[0] = (__bridge id)(frameData);
         CFRelease(frameData);
     }