Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146959 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/AnalysisBasedWarnings.cpp b/lib/Sema/AnalysisBasedWarnings.cpp
index 1b7b2f0..3567b6b 100644
--- a/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/lib/Sema/AnalysisBasedWarnings.cpp
@@ -634,6 +634,7 @@
   }
 };
 
+namespace {
 class ThreadSafetyReporter : public clang::thread_safety::ThreadSafetyHandler {
   Sema &S;
   DiagList Warnings;
@@ -744,6 +745,7 @@
 };
 }
 }
+}
 
 //===----------------------------------------------------------------------===//
 // AnalysisBasedWarnings - Worker object used by Sema to execute analysis-based