File gtkmm2-null.patch of Package gtkmm2

Index: gtkmm-2.10.8/gtk/gtkmm/treeview.cc
===================================================================
--- gtkmm-2.10.8.orig/gtk/gtkmm/treeview.cc
+++ gtkmm-2.10.8/gtk/gtkmm/treeview.cc
@@ -236,7 +236,8 @@ bool TreeView::get_path_at_pos(int x, in
 int TreeView::insert_column(const Glib::ustring& title, CellRenderer& cell, int position)
 {
   return gtk_tree_view_insert_column_with_attributes(
-      gobj(), position, const_cast<char*>(title.c_str()), cell.gobj(), (void*)0); //Note that some compilers need the extra (void*) clue.
+      gobj(), position, const_cast<char*>(title.c_str()), cell.gobj(), NULL); //Note that some compilers need the extra (void*) clue.
+// But I'm changing it to NULL anyway.
 }
 
 int TreeView::append_column(const Glib::ustring& title, CellRenderer& cell)