[gtksourceview] sourcefile: ignore deprecations in private API

[Christian Hergert <chergert src gnome org>]

commit 9af5e2976c9d520c3ffe96ce642b21f83bcdf527
Author: Christian Hergert <chergert redhat com>
Date:   Tue Aug 6 15:46:24 2019 -0700

    sourcefile: ignore deprecations in private API

 gtksourceview/gtksourcefile.h | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtksourceview/gtksourcefile.h b/gtksourceview/gtksourcefile.h
index b4c51ce7..0e6b0163 100644
--- a/gtksourceview/gtksourcefile.h
+++ b/gtksourceview/gtksourcefile.h
@@ -170,6 +170,7 @@ void                 _gtk_source_file_set_compression_type          (GtkSourceFile        
    *file,
 G_GNUC_INTERNAL
 GMountOperation        *_gtk_source_file_create_mount_operation        (GtkSourceFile *file);
 
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
 G_GNUC_INTERNAL
 gboolean        _gtk_source_file_get_modification_time         (GtkSourceFile *file,
                                                                 GTimeVal      *modification_time);
@@ -177,6 +178,7 @@ gboolean     _gtk_source_file_get_modification_time         (GtkSourceFile *file,
 G_GNUC_INTERNAL
 void            _gtk_source_file_set_modification_time         (GtkSourceFile *file,
                                                                 GTimeVal       modification_time);
+G_GNUC_END_IGNORE_DEPRECATIONS
 
 G_GNUC_INTERNAL
 void            _gtk_source_file_set_externally_modified       (GtkSourceFile *file,