From fa4e20e8747fd48d3d9cb7004743b931ba39cfaf Mon Sep 17 00:00:00 2001
From: Ethan Nagel <eanagel@gmail.com>
Date: Wed, 24 Feb 2016 11:03:06 -0800
Subject: [PATCH] Initialize _asyncDelegateImplementsScrollviewDidScroll so we
 forward scollViewDidScroll: calls

---
 AsyncDisplayKit/ASTableView.mm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/AsyncDisplayKit/ASTableView.mm b/AsyncDisplayKit/ASTableView.mm
index c6eefd394b..6241f28a61 100644
--- a/AsyncDisplayKit/ASTableView.mm
+++ b/AsyncDisplayKit/ASTableView.mm
@@ -287,8 +287,10 @@ static NSString * const kCellReuseIdentifier = @"_ASTableViewCell";
   if (asyncDelegate == nil) {
     _asyncDelegate = nil;
     _proxyDelegate = _isDeallocating ? nil : [[ASTableViewProxy alloc] initWithTarget:nil interceptor:self];
+    _asyncDelegateImplementsScrollviewDidScroll = NO;
   } else {
     _asyncDelegate = asyncDelegate;
+    _asyncDelegateImplementsScrollviewDidScroll = [_asyncDelegate respondsToSelector:@selector(scrollViewDidScroll:)];
     _proxyDelegate = [[ASTableViewProxy alloc] initWithTarget:_asyncDelegate interceptor:self];
   }