[vala/wip/issue/160: 1/2] codegen: "_first_array" parameter for params-array is variadic too

[Rico Tzschichholz <ricotz src gnome org>]

commit 252efaa6c9c48fb383c35458d271ca34475476e7
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Mar 2 17:55:25 2021 +0100

    codegen: "_first_array" parameter for params-array is variadic too
    
    Not following this resulted in mismatching signature assumptions between
    caller and callee if the callable throws an error.

 codegen/valaccodemethodmodule.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/codegen/valaccodemethodmodule.vala b/codegen/valaccodemethodmodule.vala
index ec18f786c..4366a0e8e 100644
--- a/codegen/valaccodemethodmodule.vala
+++ b/codegen/valaccodemethodmodule.vala
@@ -913,7 +913,7 @@ public abstract class Vala.CCodeMethodModule : CCodeStructModule {
                                }
 
                                cparam = new CCodeParameter ("_first_%s".printf (get_ccode_name (param)), 
ctypename);
-                               cparam_map.set (get_param_pos (get_ccode_pos (param), false), cparam);
+                               cparam_map.set (get_param_pos (get_ccode_pos (param) - 0.1, true), cparam);
 
                                va_list_name = "_va_list_%s".printf (get_ccode_name (param));
                        }