[libsigcplusplus/libsigc++-2-8] examples: Don't use deprecated mem_fun(pointer, func).

[Murray Cumming <murrayc src gnome org>]

commit ee10e818ea7de842b7c7276caf841232d795a74c
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Mar 10 17:17:32 2016 +0100

    examples: Don't use deprecated mem_fun(pointer, func).

 examples/member_method.cc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/examples/member_method.cc b/examples/member_method.cc
index 574b1fc..2b4d732 100644
--- a/examples/member_method.cc
+++ b/examples/member_method.cc
@@ -25,7 +25,7 @@ protected:
 
 Something::Something()
 {
-  auto iter = signal_print.connect( sigc::mem_fun(this, &Something::on_print) );
+  auto iter = signal_print.connect( sigc::mem_fun(*this, &Something::on_print) );
 
   signal_print.emit(2);