Add __need_winit_t to wctype.h

include/bits/wctype.h

+#ifndef _BITS_WCTYPE_H
+#define _BITS_WCTYPE_H
+#include <stdint.h>
+
+#define __need_wint_t
+
+#endif /* _BITS_WCTYPE_H */

src/header/wctype/cbindgen.toml

 sys_includes = ["stddef.h", "stdint.h", "time.h", "stdio.h" ]
 include_guard = "_WCTYPE_H"
-header = ""
+header = "#include <bits/wctype.h>"
 language = "C"
 style = "Type"
 no_includes = true