[gtkmm] C++11: generate_cellrenderer(): Use auto.

[Murray Cumming <murrayc src gnome org>]

commit bea1108e173cab94357873a59a90032f20999967
Author: Murray Cumming <murrayc murrayc com>
Date:   Sat Apr 2 09:06:28 2016 +0200

    C++11: generate_cellrenderer(): Use auto.

 gtk/gtkmm/cellrenderer_generation.h |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkmm/cellrenderer_generation.h b/gtk/gtkmm/cellrenderer_generation.h
index d11f931..fbe0048 100644
--- a/gtk/gtkmm/cellrenderer_generation.h
+++ b/gtk/gtkmm/cellrenderer_generation.h
@@ -36,12 +36,12 @@ namespace CellRenderer_Generation
 template<class T_ModelColumnType> //e.g. bool or Glib::ustring.
 CellRenderer* generate_cellrenderer(bool editable = false)
 {
-  CellRendererText* pCellRenderer = new CellRendererText(); //the default - template specializations will 
use other renderers.
+  auto cell_renderer = new CellRendererText(); //the default - template specializations will use other 
renderers.
   //CellRendererText can render both strings and numerical values.
 
-  pCellRenderer->property_editable() = editable;
+  cell_renderer->property_editable() = editable;
 
-  return pCellRenderer;
+  return cell_renderer;
 }
 
 #if !defined(__GNUC__) || __GNUC__ > 2