[libsigcplusplus] slot_rep: Make =deleted operations public.

[Murray Cumming <murrayc src gnome org>]

commit 23c48b1044a786fc91350f1da75d56fba79ba33b
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Apr 15 08:37:53 2016 +0200

    slot_rep: Make =deleted operations public.
    
    It doesn't really make sense for these to be private.

 sigc++/functors/slot_base.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/sigc++/functors/slot_base.h b/sigc++/functors/slot_base.h
index 286f301..d6466f5 100644
--- a/sigc++/functors/slot_base.h
+++ b/sigc++/functors/slot_base.h
@@ -54,6 +54,7 @@ using hook = void* (*)(void*);
  */
 struct SIGC_API slot_rep : public trackable
 {
+public:
   slot_rep(const slot_rep& src) = delete;
   slot_rep& operator=(const slot_rep& src) = delete;
 
@@ -65,7 +66,6 @@ struct SIGC_API slot_rep : public trackable
    * down dereferencing of slot list iterators. Martin. */
   // TODO: Try this now? murrayc.
 
-public:
   using hook_dup = slot_rep* (*)(slot_rep*);
 
   inline slot_rep(hook call__, notifiable::func_destroy_notify destroy__, hook_dup dup__) noexcept