[glib/mcatanzaro/glib-2-56-rhel8] codegen: Suppress the old --xml-files option in the --help output

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 11de9adfe6f57521ea5ed881b6862480c742414c
Author: Philip Withnall <withnall endlessm com>
Date:   Tue Apr 17 14:12:18 2018 +0100

    codegen: Suppress the old --xml-files option in the --help output
    
    Since it’s deprecated in favour of positional arguments, including it in
    the help output is confusing.
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=795304

 gio/gdbus-2.0/codegen/codegen_main.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gio/gdbus-2.0/codegen/codegen_main.py b/gio/gdbus-2.0/codegen/codegen_main.py
index 37efb3bcff..d3763eb0f4 100755
--- a/gio/gdbus-2.0/codegen/codegen_main.py
+++ b/gio/gdbus-2.0/codegen/codegen_main.py
@@ -152,7 +152,7 @@ def codegen_main():
     arg_parser.add_argument('files', metavar='FILE', nargs='*',
                             help='D-Bus introspection XML file')
     arg_parser.add_argument('--xml-files', metavar='FILE', action='append', default=[],
-                            help='D-Bus introspection XML file')
+                            help=argparse.SUPPRESS)
     arg_parser.add_argument('--interface-prefix', metavar='PREFIX', default='',
                             help='String to strip from D-Bus interface names for code and docs')
     arg_parser.add_argument('--c-namespace', metavar='NAMESPACE', default='',