[gupnp-av] build: Fix Requires: line of pkg-config file

[Jens Georg <jensgeorg src gnome org>]

commit 767388bc16e08d4e1e1f419555165cc1816be931
Author: Jens Georg <mail jensge org>
Date:   Sun Jun 5 14:33:23 2022 +0200

    build: Fix Requires: line of pkg-config file

 meson.build | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/meson.build b/meson.build
index 4c072c3..f4b629f 100644
--- a/meson.build
+++ b/meson.build
@@ -87,6 +87,12 @@ subdir('data')
 pkg = import('pkgconfig')
 pkg.generate(
     gupnp_av_lib,
+    requires : [
+      'glib-2.0',
+      'gobject-2.0',
+      'gio-2.0',
+      'libxml-2.0'
+    ],
     subdirs : 'gupnp-av-1.0',
     description : 'GObject-based AV specific UPnP library'
 )