[gnome-sound-recorder] Fix duplicate buttons in headerbar of about dialog

[Meg Ford (Margaret) <megford src gnome org>]

commit 7fb35c5372555253b1a7506b98b8793375f79dc6
Author: Jishnu Mohan <jishnu7 gmail com>
Date:   Thu Feb 25 20:42:01 2016 +0530

    Fix duplicate buttons in headerbar of about dialog
    
    Using header option in AboutDialog creates issues in the layout. Other
    applictions now doesn't use header. So removing it from here.
    
    Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=762682
    
    Signed-off-by: Meg Ford <megford gnome org>

 src/application.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/application.js b/src/application.js
index 4b09ac8..838e1b8 100644
--- a/src/application.js
+++ b/src/application.js
@@ -157,7 +157,7 @@ const Application = new Lang.Class({
     },
     
     _showAbout: function() {
-        let aboutDialog = new Gtk.AboutDialog({ use_header_bar: true });
+        let aboutDialog = new Gtk.AboutDialog();
         aboutDialog.artists = [ 'Reda Lazri <the red shortcut gmail com>',
                                 'Garrett LeSage <garrettl gmail com>',
                                 'Hylke Bons <hylkebons gmail com>',