fix 'var unused' warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50484 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaDecl.cpp

@@ -2449,8 +2449,8 @@ void Sema::HandleTransparentUnionAttribute(Decl *d, AttributeList *rawAttr) {
     return;
   }
 
-  QualType QTy = Context.getTypeDeclType(decl);
-  const RecordType *Ty = QTy->getAsUnionType();
+  //QualType QTy = Context.getTypeDeclType(decl);
+  //const RecordType *Ty = QTy->getAsUnionType();
 
 // FIXME
 // Ty->addAttr(new TransparentUnionAttr());