Make ilist_traits<MachineBasicBlock>'s Parent member private.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52974 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h
index 97027da..ad4f1d1 100644
--- a/include/llvm/CodeGen/MachineFunction.h
+++ b/include/llvm/CodeGen/MachineFunction.h
@@ -32,7 +32,7 @@
 
 // ilist_traits
 template <>
-struct ilist_traits<MachineBasicBlock> {
+class ilist_traits<MachineBasicBlock> {
   // this is only set by the MachineFunction owning the ilist
   friend class MachineFunction;
   MachineFunction* Parent;