[gnome-build-meta/mcatanzaro/fix-appstream-glib] sdk: add patch to fix appstream-validate command

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 2bc3f664c4b554ba47fa6da5feb2a7e2d8ace082
Author: Michael Catanzaro <mcatanzaro redhat com>
Date:   Mon Jul 25 12:09:17 2022 -0500

    sdk: add patch to fix appstream-validate command
    
    Fixes #524

 elements/sdk/appstream-glib.bst                   |  2 ++
 files/appstream-glib/fix-appstream-validate.patch | 24 +++++++++++++++++++++++
 2 files changed, 26 insertions(+)
---
diff --git a/elements/sdk/appstream-glib.bst b/elements/sdk/appstream-glib.bst
index 338122319..2309a4b6b 100644
--- a/elements/sdk/appstream-glib.bst
+++ b/elements/sdk/appstream-glib.bst
@@ -3,6 +3,8 @@ kind: meson
 sources:
 - kind: tar
   url: freedesktop_people:~hughsient/appstream-glib/releases/appstream-glib-0.8.0.tar.xz
+- kind: patch
+  path: files/appstream-glib/fix-appstream-validate.patch
 
 build-depends:
 - sdk/gobject-introspection.bst
diff --git a/files/appstream-glib/fix-appstream-validate.patch 
b/files/appstream-glib/fix-appstream-validate.patch
new file mode 100644
index 000000000..baefab9db
--- /dev/null
+++ b/files/appstream-glib/fix-appstream-validate.patch
@@ -0,0 +1,24 @@
+From 323f4ea96f95d1522b951963a5d91e5320d38274 Mon Sep 17 00:00:00 2001
+From: Michael Catanzaro <mcatanzaro redhat com>
+Date: Fri, 22 Jul 2022 08:32:14 -0500
+Subject: [PATCH] Initialize proxy resolver in appstream-validate
+
+Oops, trying to use it would just result in criticals.
+
+Fixes #449
+---
+ libappstream-glib/as-app-validate.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libappstream-glib/as-app-validate.c b/libappstream-glib/as-app-validate.c
+index f18d2453..85f4e45e 100644
+--- a/libappstream-glib/as-app-validate.c
++++ b/libappstream-glib/as-app-validate.c
+@@ -1330,6 +1330,7 @@ as_app_validate (AsApp *app, guint32 flags, GError **error)
+       helper->probs = g_ptr_array_new_with_free_func ((GDestroyNotify) g_object_unref);
+       helper->screenshot_urls = g_ptr_array_new_with_free_func (g_free);
+       helper->flags = flags;
++      helper->proxy_resolver = g_proxy_resolver_get_default ();
+       if (!as_app_validate_setup_networking (helper, error))
+               return NULL;
+