[gitg] Add destructive-action class to dash delete button

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

commit ee8c80e6d7738996831f45cebefed06c1e8f09ab
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Mon Aug 3 09:08:03 2015 +0200

    Add destructive-action class to dash delete button

 gitg/gitg-dash-view.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gitg/gitg-dash-view.vala b/gitg/gitg-dash-view.vala
index da05642..91d239c 100644
--- a/gitg/gitg-dash-view.vala
+++ b/gitg/gitg-dash-view.vala
@@ -145,6 +145,7 @@ class DashView : RepositoryListBox, GitgExt.UIElement, GitgExt.Activity, GitgExt
                        var ab = new Gtk.ActionBar();
 
                        var del = new Gtk.Button.with_mnemonic(_("_Delete"));
+                       del.get_style_context().add_class(Gtk.STYLE_CLASS_DESTRUCTIVE_ACTION);
 
                        del.sensitive = false;
                        del.show();