[gitg] Back button is now always hidden on dash

[Ignacio Casal Quinteiro <icq src gnome org>]

commit bb630e0bab9ec889562134143e2949b3b84e3f95
Author: Mitchell Hentges <mitch9654 gmail com>
Date:   Sat May 9 10:09:30 2015 -0700

    Back button is now always hidden on dash
    
    https://bugzilla.gnome.org/show_bug.cgi?id=749147

 gitg/gitg-window.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gitg/gitg-window.vala b/gitg/gitg-window.vala
index da565c5..009183c 100644
--- a/gitg/gitg-window.vala
+++ b/gitg/gitg-window.vala
@@ -921,7 +921,7 @@ public class Window : Gtk.ApplicationWindow, GitgExt.Application, Initable
                        d_search_button.visible = !issel && searchable != null;
                        d_gear_menu.visible = !issel;
                        d_select_button.visible = !issel;
-                       d_dash_button.visible = !issel;
+                       d_dash_button.visible = !issel && d_repository != null;
                        d_activities_switcher.visible = !issel && d_repository != null;
                        d_select_cancel_button.visible = issel;