[gnome-calendar/calendar-editor] window: fix signal name

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 854893c8aae7519d35e3c9fdc0b5526d3746b98b
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Mon Feb 9 12:10:31 2015 -0200

    window: fix signal name

 data/ui/window.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/ui/window.ui b/data/ui/window.ui
index d557a9a..241feb4 100644
--- a/data/ui/window.ui
+++ b/data/ui/window.ui
@@ -363,7 +363,7 @@
             <property name="can_focus">True</property>
             <property name="relief">none</property>
             <property name="receives_default">True</property>
-            <signal name="clicked" handler="open_source_dialog" object="GcalWindow" swapped="no" />
+            <signal name="clicked" handler="show_source_dialog" object="GcalWindow" swapped="no" />
             <child>
               <object class="GtkBox" id="add_button_box">
                 <property name="visible">True</property>