[gnome-calendar] source-dialog: fix memory leak

[Erick Pérez Castellanos <erickpc src gnome org>]

commit b8fea7f1d149e30a5a730ae21d27de27167de6c6
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri May 22 22:54:11 2015 -0300

    source-dialog: fix memory leak
    
    Free duplicated string when the listbox row is
    destroyed.

 src/gcal-source-dialog.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/src/gcal-source-dialog.c b/src/gcal-source-dialog.c
index 744ab1c..a8fbd92 100644
--- a/src/gcal-source-dialog.c
+++ b/src/gcal-source-dialog.c
@@ -1577,10 +1577,9 @@ discover_sources_cb (GObject      *source,
 
           g_object_set_data (G_OBJECT (row), "parent-source", source);
           g_object_set_data (G_OBJECT (row), "source", new_source);
-          g_object_set_data (G_OBJECT (row), "source-url", g_strdup (src->href));
-          g_object_set_data (G_OBJECT (row), "source-color", g_strdup (src->color));
-          g_object_set_data (G_OBJECT (row), "source-display-name", g_strdup (src->display_name));
-          //g_object_set_data (G_OBJECT (row), "source-email", g_strdup (g_slist_nth_data (user_adresses, 
counter)));
+          g_object_set_data_full (G_OBJECT (row), "source-url", g_strdup (src->href), g_free);
+          g_object_set_data_full (G_OBJECT (row), "source-color", g_strdup (src->color), g_free);
+          g_object_set_data_full (G_OBJECT (row), "source-display-name", g_strdup (src->display_name), 
g_free);
 
           gtk_widget_show_all (row);
         }