Add vtable anchor to classes.

llvm-svn: 350143
diff --git a/clang/lib/AST/DeclTemplate.cpp b/clang/lib/AST/DeclTemplate.cpp
index 04e1803..76f29da 100644
--- a/clang/lib/AST/DeclTemplate.cpp
+++ b/clang/lib/AST/DeclTemplate.cpp
@@ -149,6 +149,8 @@
 // RedeclarableTemplateDecl Implementation
 //===----------------------------------------------------------------------===//
 
+void RedeclarableTemplateDecl::anchor() {}
+
 RedeclarableTemplateDecl::CommonBase *RedeclarableTemplateDecl::getCommonPtr() const {
   if (Common)
     return Common;