[vala/0.48] codegen: Handle "gtk_param_spec_expression" in get_param_spec()

[Rico Tzschichholz <ricotz src gnome org>]

commit c216d24ce05a58b4f3842a82aaeeb3e8160279bb
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Thu Jul 2 19:50:48 2020 +0200

    codegen: Handle "gtk_param_spec_expression" in get_param_spec()

 codegen/valagtypemodule.vala | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/codegen/valagtypemodule.vala b/codegen/valagtypemodule.vala
index f02683ea6..9ac57cd10 100644
--- a/codegen/valagtypemodule.vala
+++ b/codegen/valagtypemodule.vala
@@ -1839,6 +1839,8 @@ public class Vala.GTypeModule : GErrorModule {
                        } else if (param_spec_name == "g_param_spec_variant") {
                                cspec.add_argument (new CCodeConstant ("G_VARIANT_TYPE_ANY"));
                                cspec.add_argument (new CCodeConstant ("NULL"));
+                       } else if (param_spec_name == "gtk_param_spec_expression") {
+                               // No additional parameter required
                        } else if (get_ccode_type_id (type_symbol) != "G_TYPE_POINTER") {
                                cspec.add_argument (new CCodeIdentifier (get_ccode_type_id (type_symbol)));
                        }