[gnome-photos] main-window: Fix the logo-icon-name in the about dialog

[Debarshi Ray <debarshir src gnome org>]

commit 2954c05896e949ca07d658ae434521d38ef2feac
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Aug 18 21:20:12 2016 +0200

    main-window: Fix the logo-icon-name in the about dialog
    
    Fall out from 17c7939ea7b4ef8e13a22de3f4e05177e167cc1f

 src/photos-main-window.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/src/photos-main-window.c b/src/photos-main-window.c
index 09cbacc..a0981ad 100644
--- a/src/photos-main-window.c
+++ b/src/photos-main-window.c
@@ -485,6 +485,12 @@ photos_main_window_new (GtkApplication *application)
 void
 photos_main_window_show_about (PhotosMainWindow *self)
 {
+  GApplication *app;
+  const gchar *app_id;
+
+  app = g_application_get_default ();
+  app_id = g_application_get_application_id (app);
+
   gtk_show_about_dialog (GTK_WINDOW (self),
                          "artists", PHOTOS_ARTISTS,
                          "authors", PHOTOS_AUTHORS,
@@ -493,7 +499,7 @@ photos_main_window_show_about (PhotosMainWindow *self)
                                         "Copyright © 2014 – 2015 Pranav Kant\n"
                                         "Copyright © 2012 – 2016 Red Hat, Inc."),
                          "license-type", GTK_LICENSE_GPL_2_0,
-                         "logo-icon-name", PACKAGE_TARNAME,
+                         "logo-icon-name", app_id,
                          "program-name", _(PACKAGE_NAME),
                          "version", _(PACKAGE_VERSION),
                          "website", PACKAGE_URL,