[gnome-builder] build-tools: ensure environment editor is available

[Christian Hergert <chergert src gnome org>]

commit 69e33044a1cca449dc3171bd05e44bebcf68fd60
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jun 17 01:23:03 2016 -0400

    build-tools: ensure environment editor is available

 plugins/build-tools/gbp-build-configuration-view.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/plugins/build-tools/gbp-build-configuration-view.c 
b/plugins/build-tools/gbp-build-configuration-view.c
index a86ed83..a361aa1 100644
--- a/plugins/build-tools/gbp-build-configuration-view.c
+++ b/plugins/build-tools/gbp-build-configuration-view.c
@@ -364,6 +364,8 @@ gbp_build_configuration_view_class_init (GbpBuildConfigurationViewClass *klass)
   gtk_widget_class_bind_template_child (widget_class, GbpBuildConfigurationView, environment_editor);
   gtk_widget_class_bind_template_child (widget_class, GbpBuildConfigurationView, prefix_entry);
   gtk_widget_class_bind_template_child (widget_class, GbpBuildConfigurationView, runtime_list_box);
+
+  g_type_ensure (IDE_TYPE_ENVIRONMENT_EDITOR);
 }
 
 static void