[gimp] app: activate GimpPopup's binding set in key_press()

[Michael Natterer <mitch src gnome org>]

commit ce1c86b71b5c51a2e655eea0390af4e73a0f2bde
Author: Michael Natterer <mitch gimp org>
Date:   Fri Jun 6 09:22:51 2014 +0200

    app: activate GimpPopup's binding set in key_press()
    
    not that of its subclass. Fixes selecting items with return/enter.

 app/widgets/gimppopup.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/app/widgets/gimppopup.c b/app/widgets/gimppopup.c
index 1a1e5f5..7061f8b 100644
--- a/app/widgets/gimppopup.c
+++ b/app/widgets/gimppopup.c
@@ -221,7 +221,7 @@ gimp_popup_key_press (GtkWidget   *widget,
 {
   GtkBindingSet *binding_set;
 
-  binding_set = gtk_binding_set_by_class (GIMP_POPUP_GET_CLASS (widget));
+  binding_set = gtk_binding_set_by_class (g_type_class_peek (GIMP_TYPE_POPUP));
 
   /*  invoke the popup's binding entries manually, because otherwise
    *  the focus widget (GtkTreeView e.g.) would consume it