[libpanel] build: add save dialog to public sources

[Christian Hergert <chergert src gnome org>]

commit 581785bb0736856ae97b6fa78d36c81d3c97365e
Author: Christian Hergert <chergert redhat com>
Date:   Sat Sep 10 13:39:18 2022 -0700

    build: add save dialog to public sources

 src/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/meson.build b/src/meson.build
index b579992..10f0524 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -27,7 +27,6 @@ libpanel_private_sources = [
   'panel-joined-menu.c',
   'panel-maximized-controls.c',
   'panel-resizer.c',
-  'panel-save-dialog.c',
   'panel-scaler.c',
 ]
 
@@ -44,6 +43,7 @@ libpanel_sources = [
   'panel-init.c',
   'panel-omni-bar.c',
   'panel-paned.c',
+  'panel-save-dialog.c',
   'panel-save-delegate.c',
   'panel-statusbar.c',
   'panel-theme-selector.c',