From ccae56d2cd7a57c810fd66e83579bda4bc24ce37 Mon Sep 17 00:00:00 2001
From: Adlai Holler <adlai@google.com>
Date: Thu, 8 Nov 2018 07:05:28 -0800
Subject: [PATCH] Be smart

---
 Source/ASDisplayNode.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/ASDisplayNode.mm b/Source/ASDisplayNode.mm
index 04c628d0..f9d895a8 100644
--- a/Source/ASDisplayNode.mm
+++ b/Source/ASDisplayNode.mm
@@ -2154,7 +2154,7 @@ ASDISPLAYNODE_INLINE BOOL subtreeIsRasterized(ASDisplayNode *node) {
       // It is safe to access the rootNode ivar because all children
       // are synchronously removed from a node during deallocation
       // i.e. _setSupernode:nil.
-      unowned auto newRoot = newSupernode->_rootNode;
+      unowned auto newRoot = newSupernode ? newSupernode->_rootNode : self;
       _rootNode = newRoot;
 
       // Push new root node ref down while holding self.