[gnome-builder] GbWorkbench: fix credits widget.

[Christian Hergert <chergert src gnome org>]

commit 17a748eb5fb8282ec5d78d36d0c502fab963bc20
Author: Christian Hergert <christian hergert me>
Date:   Wed Dec 17 23:49:31 2014 -0800

    GbWorkbench: fix credits widget.

 src/workbench/gb-workbench.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/workbench/gb-workbench.c b/src/workbench/gb-workbench.c
index af4f636..ecb4cd9 100644
--- a/src/workbench/gb-workbench.c
+++ b/src/workbench/gb-workbench.c
@@ -818,6 +818,7 @@ gb_workbench_class_init (GbWorkbenchClass *klass)
 
   GB_WIDGET_CLASS_TEMPLATE (klass, "gb-workbench.ui");
   GB_WIDGET_CLASS_BIND (klass, GbWorkbench, command_bar);
+  GB_WIDGET_CLASS_BIND (klass, GbWorkbench, credits);
   GB_WIDGET_CLASS_BIND (klass, GbWorkbench, editor);
   GB_WIDGET_CLASS_BIND (klass, GbWorkbench, gear_menu_button);
   GB_WIDGET_CLASS_BIND (klass, GbWorkbench, header_bar);