[gnome-chess] src/gnome-chess.vala: Fix build for new vala 0.36

[Javier Jardón Cabezas <jjardon src gnome org>]

commit 1b27c4b8a90fdd20748a323671270063b55c9a49
Author: Javier Jardón <jjardon gnome org>
Date:   Sun Feb 26 13:26:50 2017 +0000

    src/gnome-chess.vala: Fix build for new vala 0.36

 src/gnome-chess.vala |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/gnome-chess.vala b/src/gnome-chess.vala
index 70b7458..0557c9f 100644
--- a/src/gnome-chess.vala
+++ b/src/gnome-chess.vala
@@ -1143,7 +1143,11 @@ Copyright © 2015–2016 Sahil Sareen""";
         var model = (Gtk.ListStore) history_combo.model;
         Gtk.TreeIter iter;
         model.iter_nth_child (out iter, null, model.iter_n_children (null) - 1);
+#if VALA_0_36
+        model.remove (ref iter);
+#else
         model.remove (iter);
+#fi
 
         /* Always undo from the most recent move */
         scene.move_number = -1;