[gnome-builder] buffer: pre-register some types

[Christian Hergert <chergert src gnome org>]

commit fdf926d18b765bdd8d309469b01ab7a72158eee9
Author: Christian Hergert <chergert redhat com>
Date:   Mon Mar 6 15:24:48 2017 -0800

    buffer: pre-register some types
    
    In the past I've seen some weird type issues here, and they seem simple
    enough to try to mitigate here.

 libide/buffers/ide-buffer-manager.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/libide/buffers/ide-buffer-manager.c b/libide/buffers/ide-buffer-manager.c
index 6a21815..f57cc78 100644
--- a/libide/buffers/ide-buffer-manager.c
+++ b/libide/buffers/ide-buffer-manager.c
@@ -1536,6 +1536,9 @@ ide_buffer_manager_class_init (IdeBufferManagerClass *klass)
                                             G_SIGNAL_RUN_LAST,
                                             0, NULL, NULL, NULL,
                                             G_TYPE_NONE, 1, IDE_TYPE_BUFFER);
+
+  g_type_ensure (GTK_SOURCE_TYPE_FILE_LOADER);
+  g_type_ensure (GTK_SOURCE_TYPE_FILE_SAVER);
 }
 
 static void