[gnome-control-center] background: Don't show errors when loading default bg

[Bastien Nocera <hadess src gnome org>]

commit d361022907b771be062f7ce7e0167372f0f99252
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Mar 29 11:09:14 2011 +0100

    background: Don't show errors when loading default bg
    
    Check whether the file exists so we don't get warnings
    when loading the default wallpaper on startup.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=646056

 panels/background/cc-background-xml.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/panels/background/cc-background-xml.c b/panels/background/cc-background-xml.c
index 4aa0ab9..9f7a74b 100644
--- a/panels/background/cc-background-xml.c
+++ b/panels/background/cc-background-xml.c
@@ -485,6 +485,9 @@ cc_background_xml_load_xml (CcBackgroundXml *xml,
 {
 	g_return_val_if_fail (CC_IS_BACKGROUND_XML (xml), FALSE);
 
+	if (g_file_test (filename, G_FILE_TEST_IS_REGULAR) == FALSE)
+		return NULL;
+
 	return cc_background_xml_load_xml_internal (xml, filename, FALSE);
 }