From 4258bb69d647e52663949216ecb19fc98a6e9cee Mon Sep 17 00:00:00 2001
From: Scott Goodson <scottgoodson@gmail.com>
Date: Thu, 28 Jul 2016 21:38:52 -0700
Subject: [PATCH] Fix to ASDisplayNode so that in production, the faulty
 product code that returns nil for an ASLayoutSpec does not crash.

---
 AsyncDisplayKit/ASDisplayNode.mm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/AsyncDisplayKit/ASDisplayNode.mm b/AsyncDisplayKit/ASDisplayNode.mm
index a9c87e15..b7406814 100644
--- a/AsyncDisplayKit/ASDisplayNode.mm
+++ b/AsyncDisplayKit/ASDisplayNode.mm
@@ -1992,7 +1992,8 @@ void recursivelyTriggerDisplayForLayer(CALayer *layer, BOOL shouldBlock)
     return _layoutSpecBlock(self, constrainedSize);
   }
   
-  return nil;
+  ASDisplayNodeAssert(NO, @"-[ASDisplayNode layoutSpecThatFits:] should never fall through to return empty value");
+  return [[ASLayoutSpec alloc] init];
 }
 
 - (ASLayout *)calculatedLayout