More work on thunks - don't assert if there's a variable with the same name as the thunk already.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99303 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGVtable.h b/lib/CodeGen/CGVtable.h
index 450fa93..cc4cb87 100644
--- a/lib/CodeGen/CGVtable.h
+++ b/lib/CodeGen/CGVtable.h
@@ -341,7 +341,7 @@
   // have, as well as the vtable itself if the global decl is the key function.
   void EmitVTableRelatedData(GlobalDecl GD);
 
-  /// GenerateClassData - Generate all the class data requires to be generated
+  /// GenerateClassData - Generate all the class data required to be generated
   /// upon definition of a KeyFunction.  This includes the vtable, the
   /// rtti data structure and the VTT.
   ///