Fix PR14413 - incorrect mangling of anonymous namespaces with -cxx-abi microsoft

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168583 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/MicrosoftMangle.cpp b/lib/AST/MicrosoftMangle.cpp
index 7a12c4d..d91f512 100644
--- a/lib/AST/MicrosoftMangle.cpp
+++ b/lib/AST/MicrosoftMangle.cpp
@@ -453,7 +453,7 @@
       
       if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) {
         if (NS->isAnonymousNamespace()) {
-          Out << "?A";
+          Out << "?A@";
           break;
         }
       }