From 45f719fc6cfd73b2c276033b246f76fd2877a449 Mon Sep 17 00:00:00 2001
From: Ian Cloutier <iancloutier@gmail.com>
Date: Sat, 23 May 2015 12:04:58 -0400
Subject: [PATCH] Create pending nodes set lazily

---
 AsyncDisplayKit/ASDisplayNode.mm | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/AsyncDisplayKit/ASDisplayNode.mm b/AsyncDisplayKit/ASDisplayNode.mm
index 5ae9ffc37d..c1a269e559 100644
--- a/AsyncDisplayKit/ASDisplayNode.mm
+++ b/AsyncDisplayKit/ASDisplayNode.mm
@@ -116,8 +116,6 @@ void ASDisplayNodePerformBlockOnMainThread(void (^block)())
   _contentsScaleForDisplay = ASDisplayNodeScreenScale();
   
   _displaySentinel = [[ASSentinel alloc] init];
-  
-  _pendingDisplayNodes = [[NSMutableSet alloc] init];
 
   _flags.isInHierarchy = NO;
   _flags.displaysAsynchronously = YES;
@@ -1218,6 +1216,10 @@ static NSInteger incrementIfFound(NSInteger i) {
 {
   ASDN::MutexLocker l(_propertyLock);
 
+  if (!_pendingDisplayNodes) {
+    _pendingDisplayNodes = [[NSMutableSet alloc] init];
+  }
+
   [_pendingDisplayNodes addObject:node];
 }