[libadwaita/libadwaita-1-1] tab-view: Fix set_menu_model() check

[Alexander Mikhaylenko <alexm src gnome org>]

commit b8a448a0cc42ef4d147224953915133e11189c35
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sat Aug 20 13:55:21 2022 +0400

    tab-view: Fix set_menu_model() check
    
    menu_model can be NULL.
    
    
    (cherry picked from commit 845a0dd092e8ec6259752cfe6ae0e30f128f9c42)

 src/adw-tab-view.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/adw-tab-view.c b/src/adw-tab-view.c
index 26b64436..f4673b55 100644
--- a/src/adw-tab-view.c
+++ b/src/adw-tab-view.c
@@ -2464,7 +2464,7 @@ adw_tab_view_set_menu_model (AdwTabView *self,
                              GMenuModel *menu_model)
 {
   g_return_if_fail (ADW_IS_TAB_VIEW (self));
-  g_return_if_fail (G_IS_MENU_MODEL (menu_model));
+  g_return_if_fail (menu_model == NULL || G_IS_MENU_MODEL (menu_model));
 
   if (self->menu_model == menu_model)
     return;