Add more support for Apple's "private extern" extension...

llvm-svn: 46371
diff --git a/clang/CodeGen/CodeGenModule.cpp b/clang/CodeGen/CodeGenModule.cpp
index e841ee5..407812f 100644
--- a/clang/CodeGen/CodeGenModule.cpp
+++ b/clang/CodeGen/CodeGenModule.cpp
@@ -572,6 +572,7 @@
     assert(0 && "Can't have auto or register globals");
   case VarDecl::None:
   case VarDecl::Extern:
+  case VarDecl::PrivateExtern:
     // todo: common
     break;
   case VarDecl::Static: