[libgda/gtk3] Avoid execution warning if Goocanvas is not found

[Vivien Malerba <vivien src gnome org>]

commit f44afde689624b49c2536f6e4838b382fc7c3543
Author: Vivien Malerba <malerba gnome-db org>
Date:   Mon Feb 28 18:25:43 2011 +0100

    Avoid execution warning if Goocanvas is not found

 .../schema-browser/schema-browser-perspective.c    |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/tools/browser/schema-browser/schema-browser-perspective.c b/tools/browser/schema-browser/schema-browser-perspective.c
index 26c7d73..14a4fcf 100644
--- a/tools/browser/schema-browser/schema-browser-perspective.c
+++ b/tools/browser/schema-browser/schema-browser-perspective.c
@@ -332,11 +332,13 @@ static const gchar *ui_actions_info =
 	"    <menu name='Display' action='Display'>"
 	"      <menuitem name='SchemaBrowserFavoritesShow' action='SchemaBrowserFavoritesShow'/>"
         "    </menu>"
+#ifdef HAVE_GOOCANVAS
         "    <placeholder name='MenuExtension'>"
         "      <menu name='Schema' action='Schema'>"
         "        <menuitem name='NewDiagram' action= 'NewDiagram'/>"
         "      </menu>"
         "    </placeholder>"
+#endif
         "  </menubar>"
         "</ui>";