Fix an unused-variable warning.

llvm-svn: 315689
diff --git a/clang/lib/CodeGen/CGClass.cpp b/clang/lib/CodeGen/CGClass.cpp
index 60a9936..3b8209f 100644
--- a/clang/lib/CodeGen/CGClass.cpp
+++ b/clang/lib/CodeGen/CGClass.cpp
@@ -1516,7 +1516,7 @@
   llvm::Value *LoadThisForDtorDelete(CodeGenFunction &CGF,
                                      const CXXDestructorDecl *DD) {
     if (Expr *ThisArg = DD->getOperatorDeleteThisArg())
-      return CGF.EmitScalarExpr(DD->getOperatorDeleteThisArg());
+      return CGF.EmitScalarExpr(ThisArg);
     return CGF.LoadCXXThis();
   }