don't redefine a parameter


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40748 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 39535f1..d1f7669 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -4031,7 +4031,7 @@
   SDOperand Res = DAG.getNode(ISD::CALL,
                               DAG.getVTList(&RetTys[0], NumRegs + 1),
                               &Ops[0], Ops.size());
-  SDOperand Chain = Res.getValue(NumRegs);
+  Chain = Res.getValue(NumRegs);
 
   // Gather up the call result into a single value.
   if (RetTy != Type::VoidTy) {