[vala] gio-2.0: make DataInputStream.read_line*.length default to null

[Evan Nemerson <evann src gnome org>]

commit 5ac55f414cd092efa4522828d0931b1f6b1b5e3a
Author: Evan Nemerson <evan coeus-group com>
Date:   Fri Jul 20 01:38:22 2012 -0700

    gio-2.0: make DataInputStream.read_line*.length default to null

 vapi/gio-2.0.vapi              |    4 ++--
 vapi/metadata/Gio-2.0.metadata |    2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/vapi/gio-2.0.vapi b/vapi/gio-2.0.vapi
index 15f477f..cd7ac47 100644
--- a/vapi/gio-2.0.vapi
+++ b/vapi/gio-2.0.vapi
@@ -853,9 +853,9 @@ namespace GLib {
 		public int32 read_int32 (GLib.Cancellable? cancellable = null) throws GLib.IOError;
 		public int64 read_int64 (GLib.Cancellable? cancellable = null) throws GLib.IOError;
 		[CCode (array_length = false, array_null_terminated = true)]
-		public string? read_line (out size_t length, GLib.Cancellable? cancellable = null) throws GLib.IOError;
+		public string? read_line (out size_t length = null, GLib.Cancellable? cancellable = null) throws GLib.IOError;
 		[CCode (array_length = false, array_null_terminated = true)]
-		public async string? read_line_async (int io_priority = GLib.Priority.DEFAULT, GLib.Cancellable? cancellable = null, out size_t length) throws GLib.IOError, GLib.IOError;
+		public async string? read_line_async (int io_priority = GLib.Priority.DEFAULT, GLib.Cancellable? cancellable = null, out size_t length = null) throws GLib.IOError, GLib.IOError;
 		public string? read_line_utf8 (out size_t length, GLib.Cancellable? cancellable = null) throws GLib.IOError;
 		[CCode (cname = "g_data_input_stream_read_line_async", finish_function = "g_data_input_stream_read_line_finish_utf8")]
 		public async string? read_line_utf8_async (int io_priority = GLib.Priority.DEFAULT, GLib.Cancellable? cancellable = null, out size_t length) throws GLib.IOError, GLib.IOError;
diff --git a/vapi/metadata/Gio-2.0.metadata b/vapi/metadata/Gio-2.0.metadata
index a5d591c..dd30492 100644
--- a/vapi/metadata/Gio-2.0.metadata
+++ b/vapi/metadata/Gio-2.0.metadata
@@ -330,6 +330,8 @@ TlsCertificate abstract=false
 DataInputStream
   .read_line type="string?"
   .read_line_finish type="string?"
+  .read_line_finish.length default=null
+  .read_line.length default=null
 
 // Forward upstream
 content_type_from_mime_type nullable