[gtef] FileSaver: workaround deadlocks in type initialization

[Sébastien Wilmet <swilmet src gnome org>]

commit cd328df1628832e7cd483a639d1f381722dba8ce
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Mar 19 12:54:17 2017 +0100

    FileSaver: workaround deadlocks in type initialization
    
    To mirror what is done in GtkSourceView.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=780216

 gtef/gtef-file-saver.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gtef/gtef-file-saver.c b/gtef/gtef-file-saver.c
index 580fa97..df6717d 100644
--- a/gtef/gtef-file-saver.c
+++ b/gtef/gtef-file-saver.c
@@ -470,6 +470,14 @@ gtef_file_saver_class_init (GtefFileSaverClass *klass)
                                                             G_PARAM_READWRITE |
                                                             G_PARAM_CONSTRUCT |
                                                             G_PARAM_STATIC_STRINGS));
+
+       /* Due to potential deadlocks when registering types, we need to ensure
+        * the dependent private class GtefBufferInputStream has been registered
+        * up front.
+        *
+        * See https://bugzilla.gnome.org/show_bug.cgi?id=780216
+        */
+       g_type_ensure (GTEF_TYPE_BUFFER_INPUT_STREAM);
 }
 
 static void