From 2f892f968fe03e82f468adf9df20fd6b06254aea Mon Sep 17 00:00:00 2001
From: Bogdan Poplauschi <bpoplauschi@gmail.com>
Date: Tue, 8 Aug 2017 13:19:20 +0300
Subject: [PATCH] Attempt to fix #1883 by using a weakSelf reference to remove
 from callbackBlocks (on the barrierQueue)

---
 SDWebImage/SDWebImageDownloaderOperation.m | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/SDWebImage/SDWebImageDownloaderOperation.m b/SDWebImage/SDWebImageDownloaderOperation.m
index b8c78ba4..f9c825a5 100644
--- a/SDWebImage/SDWebImageDownloaderOperation.m
+++ b/SDWebImage/SDWebImageDownloaderOperation.m
@@ -223,8 +223,9 @@ typedef NSMutableDictionary<NSString *, id> SDCallbacksDictionary;
 }
 
 - (void)reset {
+    __weak typeof(self) weakSelf = self;
     dispatch_barrier_async(self.barrierQueue, ^{
-        [self.callbackBlocks removeAllObjects];
+        [weakSelf.callbackBlocks removeAllObjects];
     });
     self.dataTask = nil;
     self.imageData = nil;