[C++11] Add 'override' keyword to virtual methods that override their base class.

llvm-svn: 202946
diff --git a/llvm/lib/DebugInfo/DWARFDebugLine.h b/llvm/lib/DebugInfo/DWARFDebugLine.h
index 88b1aee..a336f49 100644
--- a/llvm/lib/DebugInfo/DWARFDebugLine.h
+++ b/llvm/lib/DebugInfo/DWARFDebugLine.h
@@ -231,7 +231,7 @@
   struct DumpingState : public State {
     DumpingState(raw_ostream &OS) : OS(OS) {}
     virtual ~DumpingState();
-    virtual void finalize();
+    void finalize() override;
   private:
     raw_ostream &OS;
   };