[gtkmm-documentation] Remove orphaned undef.

[Murray Cumming <murrayc src gnome org>]

commit 7f73dde15552ed35f177bf279ca2fe208572f5db
Author: Murray Cumming <murrayc murrayc com>
Date:   Tue Jun 1 16:44:55 2010 +0200

    Remove orphaned undef.
    
    * examples/book/treeview/popup/treeview_withpopup.cc: Remove an undef
        still left over from the removal.

 ChangeLog                                          |    7 +++++++
 examples/book/treeview/popup/treeview_withpopup.cc |    2 --
 2 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 29d6b0e..64b1d75 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2010-06-01  Murray Cumming  <murrayc murrayc com>
 
+	Remove orphaned undef.
+
+	* examples/book/treeview/popup/treeview_withpopup.cc: Remove an undef
+    still left over from the removal.
+
+2010-06-01  Murray Cumming  <murrayc murrayc com>
+
 	Book: Remove the optional API appendix.
 
 	* docs/tutorial/C/gtkmm-tutorial-in.xml: Remove the appendix about the
diff --git a/examples/book/treeview/popup/treeview_withpopup.cc b/examples/book/treeview/popup/treeview_withpopup.cc
index 0e7e65d..54a854f 100644
--- a/examples/book/treeview/popup/treeview_withpopup.cc
+++ b/examples/book/treeview/popup/treeview_withpopup.cc
@@ -72,7 +72,6 @@ bool TreeView_WithPopup::on_button_press_event(GdkEventButton* event)
   //Call base class, to allow normal handling,
   //such as allowing the row to be selected by the right-click:
   return_value = TreeView::on_button_press_event(event);
-#endif
 
   //Then do our custom stuff:
   if( (event->type == GDK_BUTTON_PRESS) && (event->button == 3) )
@@ -98,4 +97,3 @@ void TreeView_WithPopup::on_menu_file_popup_generic()
     }
   }
 }
-