From a7fccf8f3352bc3e20689a46d4a8d0ce30384cb8 Mon Sep 17 00:00:00 2001
From: Turo Lamminen <turotl@gmail.com>
Date: Tue, 7 Nov 2017 18:18:01 +0200
Subject: [PATCH] OptimizeGraph: Fix possible null pointer dereference

---
 code/OptimizeGraph.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/code/OptimizeGraph.cpp b/code/OptimizeGraph.cpp
index 04971af5e..0e510e5ea 100644
--- a/code/OptimizeGraph.cpp
+++ b/code/OptimizeGraph.cpp
@@ -233,11 +233,13 @@ void OptimizeGraphProcess::CollectNewChildren(aiNode* nd, std::list<aiNode*>& no
 
     nd->mNumChildren = static_cast<unsigned int>(child_nodes.size());
 
+    if (nd->mChildren) {
     aiNode** tmp = nd->mChildren;
     for (std::list<aiNode*>::iterator it = child_nodes.begin(); it != child_nodes.end(); ++it) {
         aiNode* node = *tmp++ = *it;
         node->mParent = nd;
     }
+    }
 
     nodes_out += static_cast<unsigned int>(child_nodes.size());
 }