[glib] Add schema name in error message

[Matthias Clasen <matthiasc src gnome org>]

commit b2919e558bfb49b519eac59b657f2c7efb33241c
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Feb 14 19:13:09 2011 -0500

    Add schema name in error message
    
    Why not be helpful if it doesn't cost anything...

 gio/gsettingsschema.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gio/gsettingsschema.c b/gio/gsettingsschema.c
index fdc1779..77eb119 100644
--- a/gio/gsettingsschema.c
+++ b/gio/gsettingsschema.c
@@ -306,7 +306,8 @@ g_settings_schema_get_value (GSettingsSchema *schema,
   value = gvdb_table_get_raw_value (schema->priv->table, key);
 
   if G_UNLIKELY (value == NULL)
-    g_error ("schema does not contain a key named '%s'", key);
+    g_error ("Settings schema '%s' does not contain a key named '%s'",
+             schema->priv->name, key);
 
   iter = g_variant_iter_new (value);
   g_variant_unref (value);