[gtk] combobox: Do not unconditionally stop events in event handler

[Carlos Garnacho <carlosg src gnome org>]

commit 0547c0999f63b7dfe23fe4f380c4aff1cda95320
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Apr 25 00:26:02 2018 +0200

    combobox: Do not unconditionally stop events in event handler
    
    Prevents combobox menus from being closed.

 gtk/gtkcombobox.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkcombobox.c b/gtk/gtkcombobox.c
index 831c064539..25e325dc36 100644
--- a/gtk/gtkcombobox.c
+++ b/gtk/gtkcombobox.c
@@ -1948,10 +1948,10 @@ gtk_combo_box_menu_event (GtkWidget *widget,
       /* The menu hasn't managed the
        * event, forward it to the combobox
        */
-      gtk_bindings_activate_event (G_OBJECT (combo_box), (GdkEventKey *)event);
+      return gtk_bindings_activate_event (G_OBJECT (combo_box), (GdkEventKey *)event);
     }
 
-  return TRUE;
+  return GDK_EVENT_PROPAGATE;
 }
 
 /*