Use DSNodeHandleMap instead to be safe

llvm-svn: 4622
diff --git a/llvm/lib/Analysis/DataStructure/Steensgaard.cpp b/llvm/lib/Analysis/DataStructure/Steensgaard.cpp
index 88d8455..028bf91 100644
--- a/llvm/lib/Analysis/DataStructure/Steensgaard.cpp
+++ b/llvm/lib/Analysis/DataStructure/Steensgaard.cpp
@@ -124,7 +124,7 @@
     if (!I->isExternal()) {
       std::map<Value*, DSNodeHandle> ValMap;
       {  // Scope to free NodeMap memory ASAP
-        std::map<const DSNode*, DSNode*> NodeMap;
+        std::map<const DSNode*, DSNodeHandle> NodeMap;
         const DSGraph &FDSG = LDS.getDSGraph(*I);
         DSNodeHandle RetNode = ResultGraph->cloneInto(FDSG, ValMap, NodeMap);