[gnome-photos] preview-nav-buttons: Always evaluate their visibility when showing

[Debarshi Ray <debarshir src gnome org>]

commit 5c334ae3a209e43732ecf253bf061592ddf158f4
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon Sep 2 14:41:21 2013 +0200

    preview-nav-buttons: Always evaluate their visibility when showing
    
    Otherwise the previous and next buttons are not hidden when you reach
    the beginning or end while navigating within the preview.

 src/photos-preview-nav-buttons.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/src/photos-preview-nav-buttons.c b/src/photos-preview-nav-buttons.c
index afeb91a..d41b074 100644
--- a/src/photos-preview-nav-buttons.c
+++ b/src/photos-preview-nav-buttons.c
@@ -585,7 +585,5 @@ photos_preview_nav_buttons_show (PhotosPreviewNavButtons *self)
   PhotosPreviewNavButtonsPrivate *priv = self->priv;
 
   priv->visible = TRUE;
-  photos_preview_nav_buttons_fade_in_button (self, priv->prev_widget);
-  photos_preview_nav_buttons_fade_in_button (self, priv->next_widget);
-  photos_preview_nav_buttons_fade_in_button (self, priv->toolbar_widget);
+  photos_preview_nav_buttons_update_visibility (self);
 }