[gitg] Do not use select button to modify selectable state

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 83b2ad72c2c6f81c80b976000be6f4f377d9fda2
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Sun Jul 20 16:31:27 2014 +0300

    Do not use select button to modify selectable state

 gitg/gitg-window.vala |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)
---
diff --git a/gitg/gitg-window.vala b/gitg/gitg-window.vala
index 752ab02..a52b394 100644
--- a/gitg/gitg-window.vala
+++ b/gitg/gitg-window.vala
@@ -874,16 +874,13 @@ public class Window : Gtk.ApplicationWindow, GitgExt.Application, Initable
        [GtkCallback]
        private void on_select_cancel_button_clicked()
        {
-               d_select_button.active = false;
+               selectable_mode = GitgExt.SelectionMode.NORMAL;
        }
 
        [Signal(action = true)]
        public virtual signal void cancel()
        {
-               if (d_select_button.active)
-               {
-                       d_select_button.active = false;
-               }
+               selectable_mode = GitgExt.SelectionMode.NORMAL;
        }
 }