[gthumb] ensure the settings have been saved before exiting

[Paolo Bacchilega <paobac src gnome org>]

commit 5fd11406666813781df8702424288e72f4f87f17
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sun Feb 19 15:58:14 2017 +0100

    ensure the settings have been saved before exiting

 gthumb/gth-browser.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gthumb/gth-browser.c b/gthumb/gth-browser.c
index b3f15cf..91a6185 100644
--- a/gthumb/gth-browser.c
+++ b/gthumb/gth-browser.c
@@ -2071,6 +2071,8 @@ _gth_browser_close_final_step (gpointer user_data)
                gtk_widget_destroy (browser->priv->progress_dialog);
        }
 
+       g_settings_sync ();
+
        gtk_widget_destroy (GTK_WIDGET (browser));
 }