When adding an implicit destructor, make sure to mark it as virtual if it overrides existing destructors.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89967 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index ef59ff9..aeb9a88 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -2171,6 +2171,8 @@
     Destructor->setImplicit();
     Destructor->setTrivial(ClassDecl->hasTrivialDestructor());
     ClassDecl->addDecl(Destructor);
+    
+    AddOverriddenMethods(ClassDecl, Destructor);
   }
 }