[vala/staging] vala: Return copy of constant type in get_value_type_for_symbol()

[Rico Tzschichholz <ricotz src gnome org>]

commit e6086c81e66fb277f56a6dca0501ecb25d78bc80
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Jul 4 16:04:22 2020 +0200

    vala: Return copy of constant type in get_value_type_for_symbol()

 vala/valasemanticanalyzer.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/vala/valasemanticanalyzer.vala b/vala/valasemanticanalyzer.vala
index 1404f13cd..8242efd35 100644
--- a/vala/valasemanticanalyzer.vala
+++ b/vala/valasemanticanalyzer.vala
@@ -278,7 +278,7 @@ public class Vala.SemanticAnalyzer : CodeVisitor {
                        return new EnumValueType ((Enum) sym.parent_symbol);
                } else if (sym is Constant) {
                        unowned Constant c = (Constant) sym;
-                       return c.type_reference;
+                       return c.type_reference.copy ();
                } else if (sym is Property) {
                        unowned Property prop = (Property) sym;
                        if (lvalue) {