[vala/0.40] libvaladoc: Fix ownership declarations of Constants

[Rico Tzschichholz <ricotz src gnome org>]

commit cdad1b9960c4bd13486c06f98330f72e4e6d477c
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Fri Oct 11 16:19:19 2019 +0200

    libvaladoc: Fix ownership declarations of Constants

 valadoc/treebuilder.vala | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/valadoc/treebuilder.vala b/valadoc/treebuilder.vala
index 061cb0c79..e03d9d80d 100644
--- a/valadoc/treebuilder.vala
+++ b/valadoc/treebuilder.vala
@@ -705,6 +705,8 @@ public class Valadoc.Drivers.TreeBuilder : Vala.CodeVisitor {
                                        return Ownership.OWNED;
                                }
                                return Ownership.DEFAULT;
+                       } else if (type.parent_node is Vala.Constant) {
+                               return Ownership.DEFAULT;
                        }
                        if (type.is_weak ()) {
                                return Ownership.UNOWNED;