[gnome-photos] zoom-controls: Use g_auto*

[Debarshi Ray <debarshir src gnome org>]

commit 28066180546fbc99647599b40623bf3126926852
Author: Ekta Nandwani <mailnandwaniekta gmail com>
Date:   Wed Nov 15 07:37:11 2017 +0530

    zoom-controls: Use g_auto*
    
    https://bugzilla.gnome.org/show_bug.cgi?id=788174

 src/photos-zoom-controls.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/src/photos-zoom-controls.c b/src/photos-zoom-controls.c
index 726e722..c3d6620 100644
--- a/src/photos-zoom-controls.c
+++ b/src/photos-zoom-controls.c
@@ -151,8 +151,8 @@ static void
 photos_zoom_controls_realize (GtkWidget *widget)
 {
   GdkVisual *visual;
+  g_autoptr (GdkWindow) window = NULL;
   GdkWindow *parent_window;
-  GdkWindow *window;
   GdkWindowAttr attributes;
   GtkAllocation allocation;
   gint attributes_mask;
@@ -184,8 +184,6 @@ photos_zoom_controls_realize (GtkWidget *widget)
   window = gdk_window_new (parent_window, &attributes, attributes_mask);
   gtk_widget_set_window (widget, g_object_ref (window));
   gtk_widget_register_window (widget, window);
-
-  g_object_unref (window);
 }