[pygobject/pygobject-3-30] GValue.get_value: fix crashes for Variants

[Christoph Reiter <creiter src gnome org>]

commit 24feb14a1fa4d66947b7214f03a58267f9657d18
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Mon Nov 26 22:31:01 2018 +0100

    GValue.get_value: fix crashes for Variants
    
    backport from master

 gi/overrides/GObject.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/gi/overrides/GObject.py b/gi/overrides/GObject.py
index e2657299..fb548d81 100644
--- a/gi/overrides/GObject.py
+++ b/gi/overrides/GObject.py
@@ -345,7 +345,9 @@ class Value(GObjectModule.Value):
         elif gtype == TYPE_GTYPE:
             return self.get_gtype()
         elif gtype == TYPE_VARIANT:
-            return self.get_variant()
+            # get_variant was missing annotations
+            # https://gitlab.gnome.org/GNOME/glib/merge_requests/492
+            return self.dup_variant()
         elif gtype == TYPE_PYOBJECT:
             return self.get_boxed()
         elif gtype == _gi.TYPE_INVALID: