[gtksourceviewmm] Fix distcheck.

[Krzesimir Nowak <krnowak src gnome org>]

commit af9d6e962de1cd7575ff7899c80310b09715174d
Author: Krzesimir Nowak <qdlacz gmail com>
Date:   Sat Sep 10 20:13:16 2011 +0200

    Fix distcheck.
    
    * tests/search/main.cc: Use Gtk::Dialog::get_content_area() instead
    of deprecated Gtk::Dialog::get_vbox().

 tests/search/main.cc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/search/main.cc b/tests/search/main.cc
index 0ef9694..fa67a4d 100644
--- a/tests/search/main.cc
+++ b/tests/search/main.cc
@@ -50,7 +50,7 @@ class SearchDialog : public Dialog {
         add_button (Stock::CLOSE, RESPONSE_ACCEPT) ;
 
         m_hbox = manage (new HBox) ;
-        get_vbox ()->pack_start (*m_hbox) ;
+        get_content_area ()->pack_start (*m_hbox) ;
 
         Label *label = manage (new Label ("Search: ")) ;
         m_hbox->pack_start (*label) ;