[gnome-color-manager] Do not use gtk_image_set_from_file() as we want to see the error if it fails

[Richard Hughes <rhughes src gnome org>]

commit 9b05534e3d0073a0c09fdb14f656fc000cf035b3
Author: Richard Hughes <richard hughsie com>
Date:   Tue Feb 12 12:25:50 2013 +0000

    Do not use gtk_image_set_from_file() as we want to see the error if it fails

 src/gcm-viewer.c |   19 +++++++++++++++++--
 1 files changed, 17 insertions(+), 2 deletions(-)
---
diff --git a/src/gcm-viewer.c b/src/gcm-viewer.c
index 9b366d9..ce1868c 100644
--- a/src/gcm-viewer.c
+++ b/src/gcm-viewer.c
@@ -124,9 +124,24 @@ static void
 gcm_viewer_set_example_image (GcmViewerPrivate *viewer, GtkImage *image)
 {
 	gchar *filename;
-	filename = g_strdup_printf ("%s/figures/viewer-example-%02i.png", GCM_DATA, viewer->example_index);
-	gtk_image_set_from_file (image, filename);
+	gchar *path;
+	GdkPixbuf *pixbuf;
+	GError *error = NULL;
+
+	filename = g_strdup_printf ("viewer-example-%02i.png", viewer->example_index);
+	path = g_build_filename (GCM_DATA, "figures", filename, NULL);
+	pixbuf = gdk_pixbuf_new_from_file (path, &error);
+	if (pixbuf == NULL) {
+		g_warning ("failed to load %s: %s", filename, error->message);
+		g_error_free (error);
+		goto out;
+	}
+	gtk_image_set_from_pixbuf (image, pixbuf);
+out:
 	g_free (filename);
+	g_free (path);
+	if (pixbuf != NULL)
+		g_object_unref (pixbuf);
 }
 
 /**