[gnome-builder/wip/gtk4-port] libide/foundry: fix missing head of interface

[Christian Hergert <chergert src gnome org>]

commit 802d473502d66d0e6b29ff81b23f17d307051a97
Author: Christian Hergert <chergert redhat com>
Date:   Sat May 21 13:17:09 2022 -0700

    libide/foundry: fix missing head of interface

 src/libide/foundry/ide-run-command-provider.h | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/libide/foundry/ide-run-command-provider.h b/src/libide/foundry/ide-run-command-provider.h
index e79054289..ff1345774 100644
--- a/src/libide/foundry/ide-run-command-provider.h
+++ b/src/libide/foundry/ide-run-command-provider.h
@@ -35,6 +35,8 @@ G_DECLARE_INTERFACE (IdeRunCommandProvider, ide_run_command_provider, IDE, RUN_C
 
 struct _IdeRunCommandProviderInterface
 {
+  GTypeInterface parent_iface;
+
   void        (*list_commands_async)  (IdeRunCommandProvider  *self,
                                        GCancellable           *cancellable,
                                        GAsyncReadyCallback     callback,