[libsoup/wip/ricotz/issue129] vapi: Fix Message.add_*_handler() by unhiding user_data parameter

[Rico Tzschichholz <ricotz src gnome org>]

commit dbe8ed415b3b38f4ed281b6a2af1d5e9f47ced24
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Jan 12 10:11:16 2019 +0100

    vapi: Fix Message.add_*_handler() by unhiding user_data parameter
    
    GLib.Callback doesn't have a target/data parameter and therefore vala
    doesn't create this usual implicit parameter.
    
    Basically g-i shouldn't add a closure attribute for GObject.Callback
    parameters.
    
    Fixes https://gitlab.gnome.org/GNOME/libsoup/issues/129

 libsoup/Soup-2.4.metadata | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/libsoup/Soup-2.4.metadata b/libsoup/Soup-2.4.metadata
index c0056ec8..da659564 100644
--- a/libsoup/Soup-2.4.metadata
+++ b/libsoup/Soup-2.4.metadata
@@ -27,7 +27,9 @@ ContentSniffer.sniff.params nullable
 form_* skip=false
 Message
        .add_header_handler skip=false
+       .add_header_handler.callback closure=-1
        .add_status_code_handler skip=false
+       .add_status_code_handler.callback closure=-1
        .request_*#property skip
        .response_*#property skip
        .set_request.req_body type="uint8[]" array_length_idx=3