[pygobject] Make cancellable an optional parameter in gio.Resolver.lookup_by_address()

[Gian Mario Tagliaretti <gianmt src gnome org>]

commit 604d2bf220b1fefa415baaedbdb2882dbaf9e07e
Author: Gian Mario Tagliaretti <gianmt gnome org>
Date:   Tue Dec 29 12:39:13 2009 +0100

    Make cancellable an optional parameter in gio.Resolver.lookup_by_address()

 gio/gio.defs |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gio/gio.defs b/gio/gio.defs
index 8e0e9fb..7974b42 100644
--- a/gio/gio.defs
+++ b/gio/gio.defs
@@ -5778,7 +5778,7 @@
   (return-type "gchar*")
   (parameters
     '("GInetAddress*" "address")
-    '("GCancellable*" "cancellable")
+    '("GCancellable*" "cancellable" (null-ok) (default "NULL"))
     '("GError**" "error")
   )
 )