modelbutton: Avoid a crash

We may not have a popover menu ancestor. The check for
this was forgotten in one of the branches here.

Fixes: #3831

diff --git a/gtk/gtkmodelbutton.c b/gtk/gtkmodelbutton.c
index aa376d8945c97ed1549add3626d1f189e8e666bc..531fa25deae22fdc074f75acc847104678866e76 100644 (file)
--- a/gtk/gtkmodelbutton.c
+++ b/gtk/gtkmodelbutton.c
@@ -1404,7 +1404,8 @@ pointer_cb (GObject    *object,
       GtkModelButton *button = data;
 
       stop_open (button);
-      gtk_popover_menu_set_active_item (GTK_POPOVER_MENU (popover), NULL);
+      if (popover)
+        gtk_popover_menu_set_active_item (GTK_POPOVER_MENU (popover), NULL);
     }
 }