fix a bug


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25737 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 1f67e65..6505fed 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2215,14 +2215,13 @@
     Tmp1 = LegalizeOp(Node->getOperand(0));  // Legalize the chain.
     Tmp2 = LegalizeOp(Node->getOperand(1));  // Legalize the pointer.
 
-    MVT::ValueType VT;
+    MVT::ValueType VT = Node->getValueType(0);
     switch (TLI.getOperationAction(Node->getOpcode(), MVT::Other)) {
     default: assert(0 && "This action is not supported yet!");
     case TargetLowering::Custom:
       isCustom = true;
       // FALLTHROUGH
     case TargetLowering::Legal:
-      VT = Node->getValueType(0);
       if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1))
         Result = DAG.getVAArg(VT, Tmp1, Tmp2, Node->getOperand(2));
       else