[gitg] Fix for changes in gtk+ vapi

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 573a8f2cbb36aa07794b226a77919f4a9496cd12
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Thu Apr 11 09:53:13 2013 +0200

    Fix for changes in gtk+ vapi

 libgitg-gtk/gitg-gtk-commit-model.vala |   20 +++++++++++++++-----
 1 files changed, 15 insertions(+), 5 deletions(-)
---
diff --git a/libgitg-gtk/gitg-gtk-commit-model.vala b/libgitg-gtk/gitg-gtk-commit-model.vala
index 88dd83c..6616398 100644
--- a/libgitg-gtk/gitg-gtk-commit-model.vala
+++ b/libgitg-gtk/gitg-gtk-commit-model.vala
@@ -124,8 +124,10 @@ namespace GitgGtk
                               Gtk.TreeModelFlags.ITERS_PERSIST;
                }
 
-               public bool get_iter(ref Gtk.TreeIter iter, Gtk.TreePath path)
+               public bool get_iter(out Gtk.TreeIter iter, Gtk.TreePath path)
                {
+                       iter = {};
+
                        int[] indices = path.get_indices();
 
                        if (indices.length != 1)
@@ -160,8 +162,10 @@ namespace GitgGtk
                        return new Gtk.TreePath.from_indices((int)id);
                }
 
-               public void get_value(Gtk.TreeIter iter, int column, ref Value val)
+               public void get_value(Gtk.TreeIter iter, int column, out Value val)
                {
+                       val = {};
+
                        return_if_fail(iter.stamp == d_stamp);
 
                        uint idx = (uint)(ulong)iter.user_data;
@@ -238,8 +242,10 @@ namespace GitgGtk
                        return base[(uint)indices[0]];
                }
 
-               public bool iter_children(ref Gtk.TreeIter iter, Gtk.TreeIter? parent)
+               public bool iter_children(out Gtk.TreeIter iter, Gtk.TreeIter? parent)
                {
+                       iter = {};
+
                        if (parent == null)
                        {
                                iter.user_data = (void *)(ulong)0;
@@ -290,8 +296,10 @@ namespace GitgGtk
                        }
                }
 
-               public bool iter_nth_child(ref Gtk.TreeIter iter, Gtk.TreeIter? parent, int n)
+               public bool iter_nth_child(out Gtk.TreeIter iter, Gtk.TreeIter? parent, int n)
                {
+                       iter = {};
+
                        if (parent != null || (uint)n >= d_size)
                        {
                                return false;
@@ -303,8 +311,10 @@ namespace GitgGtk
                        return true;
                }
 
-               public bool iter_parent(ref Gtk.TreeIter parent, Gtk.TreeIter iter)
+               public bool iter_parent(out Gtk.TreeIter parent, Gtk.TreeIter iter)
                {
+                       parent = {};
+
                        return_val_if_fail(iter.stamp == d_stamp, false);
 
                        return false;