[gtk+] GtkSettings: Keep right refcount of the theme provider.

[Carlos Garnacho <carlosg src gnome org>]

commit c37797a10c8abb50be372c67c18cf0f1f2f42039
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Nov 13 22:36:22 2010 +0100

    GtkSettings: Keep right refcount of the theme provider.

 gtk/gtksettings.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtksettings.c b/gtk/gtksettings.c
index eb541f9..f699dec 100644
--- a/gtk/gtksettings.c
+++ b/gtk/gtksettings.c
@@ -2636,12 +2636,15 @@ settings_update_theme (GtkSettings *settings)
                                                       GTK_STYLE_PROVIDER (provider));
 
       if (new_provider)
-        gtk_style_context_add_provider_for_screen (settings->screen,
-                                                   GTK_STYLE_PROVIDER (new_provider),
-                                                   GTK_STYLE_PROVIDER_PRIORITY_SETTINGS + 1);
+        {
+          gtk_style_context_add_provider_for_screen (settings->screen,
+                                                     GTK_STYLE_PROVIDER (new_provider),
+                                                     GTK_STYLE_PROVIDER_PRIORITY_SETTINGS + 1);
+          g_object_ref (new_provider);
+        }
 
       g_object_set_qdata_full (G_OBJECT (settings), quark_theme_name,
-                              new_provider, (GDestroyNotify) g_object_unref);
+                               new_provider, (GDestroyNotify) g_object_unref);
     }
 }