[tracker/tracker-0.8] libtracker-client: mark graph as nullable in vapi

[Martyn James Russell <mr src gnome org>]

commit 5c844e2c956b63bba959760bca14fc13d9e5f4ad
Author: Adrien Bustany <abustany gnome org>
Date:   Wed Jul 7 10:24:16 2010 +0200

    libtracker-client: mark graph as nullable in vapi
    
    This commit fixes the prototypes of the SparqlBuilder functions
    insert_open and delete_open, marking the graph parameter as nullable.

 src/libtracker-client/tracker-client.vapi |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/libtracker-client/tracker-client.vapi b/src/libtracker-client/tracker-client.vapi
index 007e8fa..fbe5f96 100644
--- a/src/libtracker-client/tracker-client.vapi
+++ b/src/libtracker-client/tracker-client.vapi
@@ -67,14 +67,14 @@ namespace Tracker {
 		public static unowned Tracker.SparqlBuilder construct_embedded_insert (GLib.Type object_type);
 		public static unowned Tracker.SparqlBuilder construct_update (GLib.Type object_type);
 		public void delete_close ();
-		public void delete_open (string graph);
+		public void delete_open (string? graph);
 		public void drop_graph (string iri);
 		[CCode (has_construct_function = false)]
 		public SparqlBuilder.embedded_insert ();
 		public int get_length ();
 		public unowned string get_result ();
 		public void insert_close ();
-		public void insert_open (string graph);
+		public void insert_open (string? graph);
 		public void object (string s);
 		public void object_blank_close ();
 		public void object_blank_open ();