[gnome-builder] GbDocumentManager: set column types on init

[Christian Hergert <chergert src gnome org>]

commit 79210aef82d73d728c3031e1fc08121dd7b7f0a8
Author: Christian Hergert <christian hergert me>
Date:   Thu Dec 4 11:26:00 2014 -0800

    GbDocumentManager: set column types on init

 src/documents/gb-document-manager.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/src/documents/gb-document-manager.c b/src/documents/gb-document-manager.c
index 221560b..704fc99 100644
--- a/src/documents/gb-document-manager.c
+++ b/src/documents/gb-document-manager.c
@@ -249,4 +249,9 @@ gb_document_manager_class_init (GbDocumentManagerClass *klass)
 static void
 gb_document_manager_init (GbDocumentManager *self)
 {
+  GType column_types[] = { GB_TYPE_DOCUMENT };
+
+  gtk_list_store_set_column_types (GTK_LIST_STORE (self),
+                                   G_N_ELEMENTS (column_types),
+                                   column_types);
 }