dgAABBPolygonSoup segfault

newton.patch

Index: coreLibrary_200/source/core/dgAABBPolygonSoup.cpp
===================================================================
--- coreLibrary_200/source/core/dgAABBPolygonSoup.cpp	(revision 141)
+++ coreLibrary_200/source/core/dgAABBPolygonSoup.cpp	(working copy)
@@ -434,6 +434,8 @@
 			maxPasses --;
 		} while (maxPasses && (newCost < prevCost));
 
+		if (!nodesList.GetLast()) return root;
+
 		dgConstructionTree* newRoot = nodesList.GetLast()->GetInfo();
 		while (newRoot->m_parent) {
 			newRoot = newRoot->m_parent;