[gnome-calendar] source-dialog: fix sorting function

[Erick Pérez Castellanos <erickpc src gnome org>]

commit 24189bddd32e6b8d086832b56c76f45c0b1c5d2c
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun Apr 19 15:52:18 2015 -0300

    source-dialog: fix sorting function

 src/gcal-source-dialog.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/gcal-source-dialog.c b/src/gcal-source-dialog.c
index 99e6576..7348d10 100644
--- a/src/gcal-source-dialog.c
+++ b/src/gcal-source-dialog.c
@@ -354,9 +354,9 @@ calendar_listbox_sort_func (GtkListBoxRow *row1,
 
       // Retrieve parent names
       get_source_parent_name_color (priv->manager, source1, &parent_name1, NULL);
-      get_source_parent_name_color (priv->manager, source1, &parent_name2, NULL);
+      get_source_parent_name_color (priv->manager, source2, &parent_name2, NULL);
 
-      retval =  g_strcmp0 (parent_name1, parent_name2);
+      retval = g_strcmp0 (parent_name1, parent_name2);
 
       // If they have the same parent names, compare by the source display names
       if (retval == 0)