DataStructure.h doesn't include DSGraph.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4029 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DataStructure/Steensgaard.cpp b/lib/Analysis/DataStructure/Steensgaard.cpp
index c6728b5..2cd7237 100644
--- a/lib/Analysis/DataStructure/Steensgaard.cpp
+++ b/lib/Analysis/DataStructure/Steensgaard.cpp
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/DataStructure.h"
+#include "llvm/Analysis/DSGraph.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Module.h"
 #include "Support/Statistic.h"