Fix variable name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187253 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/lib/Transforms/InstCombine/InstCombineAddSub.cpp
index 8d4677b..1fa6897 100644
--- a/lib/Transforms/InstCombine/InstCombineAddSub.cpp
+++ b/lib/Transforms/InstCombine/InstCombineAddSub.cpp
@@ -1539,8 +1539,8 @@
     }
   } else if (FPExtInst *FPEI = dyn_cast<FPExtInst>(Op1)) {
     if (Value *V = dyn_castFNegVal(FPEI->getOperand(0))) {
-      Value *NewTrunc = Builder->CreateFPExt(V, I.getType());
-      return BinaryOperator::CreateFAdd(Op0, NewTrunc);
+      Value *NewExt = Builder->CreateFPExt(V, I.getType());
+      return BinaryOperator::CreateFAdd(Op0, NewExt);
     }
   }