widl: Remove use of type_t "ref" field for base types

[Robert Shearman]

Dan Hipschman wrote:

>diff --git a/tools/widl/widltypes.h b/tools/widl/widltypes.h
>index d39def3..cf0f246 100644
>--- a/tools/widl/widltypes.h
>+++ b/tools/widl/widltypes.h
>@@ -207,6 +207,7 @@ struct _type_t {
>   func_t *funcs;                  /* interfaces and modules */
>   var_t *fields;                  /* interfaces, structures and enumerations */
>   ifref_t *ifaces;                /* coclasses */
>+  type_t *orig;                   /* dup'd types */
>   int ignore, is_const, sign;
>   int defined, written, user_types_registered;
>   int typelib_idx;
>

You add a new field to type_t, yet no code uses it. Will it have some 
future purpose?

-- 
Rob Shearman