Added reset of LexicalScope in LiveDebugVariables reset function.

llvm-svn: 220545
diff --git a/llvm/lib/CodeGen/LiveDebugVariables.cpp b/llvm/lib/CodeGen/LiveDebugVariables.cpp
index 72d0e13..1624851 100644
--- a/llvm/lib/CodeGen/LiveDebugVariables.cpp
+++ b/llvm/lib/CodeGen/LiveDebugVariables.cpp
@@ -347,6 +347,7 @@
            "Dbg values are not emitted in LDV");
     EmitDone = false;
     ModifiedMF = false;
+    LS.reset();
   }
 
   /// mapVirtReg - Map virtual register to an equivalence class.