[libsigcplusplus] C++11: Small uses of auto.

[Murray Cumming <murrayc src gnome org>]

commit 40f51185e4ea7a79f327d96999f7a049f25f9871
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Apr 1 18:51:30 2016 +0200

    C++11: Small uses of auto.

 sigc++/signal.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/sigc++/signal.h b/sigc++/signal.h
index 57ca6c6..e383330 100644
--- a/sigc++/signal.h
+++ b/sigc++/signal.h
@@ -430,7 +430,7 @@ struct slot_reverse_iterator_buf
 
   decltype(auto) operator*() const
   {
-    iterator_type __tmp(i_);
+    auto __tmp(i_);
     --__tmp;
     if (!__tmp->empty() && !__tmp->blocked() && !invoked_)
     {
@@ -511,7 +511,7 @@ struct slot_reverse_iterator_buf<T_emitter, void>
 
   void operator*() const
   {
-    iterator_type __tmp(i_);
+    auto __tmp(i_);
     --__tmp;
     if (!__tmp->empty() && !__tmp->blocked() && !invoked_)
     {