glib-2.0: Revert GLib.KeyFile.to_data change

g_key_file_to_data never throws an error. Revert earlier change and
add explanation as comment.

diff --git a/vapi/glib-2.0.vapi b/vapi/glib-2.0.vapi
index 37c1d3ef7d959d4e746c87abdff774f313c59ca5..f80fa5b7700e19757e47ea4cf57052df55d4ed73 100644 (file)
--- a/vapi/glib-2.0.vapi
+++ b/vapi/glib-2.0.vapi
@@ -2739,7 +2739,8 @@ namespace GLib {
                public bool load_from_dirs (string file, [CCode (array_length = false, array_null_terminated = true)] string[] search_dirs, out string full_path, KeyFileFlags @flags) throws KeyFileError;
                public bool load_from_data (string data, ulong length, KeyFileFlags @flags) throws KeyFileError;
                public bool load_from_data_dirs (string file, out string full_path, KeyFileFlags @flags) throws KeyFileError;
-               public string to_data (out size_t length = null) throws KeyFileError;
+               // g_key_file_to_data never throws an error according to the documentation
+               public string to_data (out size_t length = null, out GLib.Error error = null);
                public string get_start_group ();
                [CCode (array_length_type = "gsize")]
                public string[] get_groups ();