gnome : fix account order move

Refs #52027

Change-Id: I135c6606753f98783319c1372d51459b4280dda6

gnome/src/accountlist.c

@@ -236,7 +236,7 @@ account_list_move_up(guint account_index)
 void
 account_list_move_down(guint account_index)
 {
-    if (account_index != accountQueue->length) {
+    if (account_index < accountQueue->length-1) {
         gpointer acc = g_queue_pop_nth(accountQueue, account_index);
         g_queue_push_nth(accountQueue, acc, account_index + 1);
     }

gnome/src/config/accountlistconfigdialog.c

@@ -354,7 +354,7 @@ account_move(gboolean move_up, gpointer data)
 
     GtkTreePath *tree_path = gtk_tree_path_new_from_string(path);
     gint *indices = gtk_tree_path_get_indices(tree_path);
-    const gint pos = indices[0];
+    const gint pos = indices[0] - 1; /* black magic : gtk tree order is not account queue order */
 
     // Depending on button direction get new path
     if (move_up)