display cleanup only targets the right-most field where it's needed

include/wintty.h

@@ -229,6 +229,8 @@ E short FDECL(set_tty_font_name, (winid, char *));
 #endif
 E char *NDECL(tty_get_color_string);
 #endif
+E void FDECL(tty_status_enablefield,
+             (int, const char *, const char *, BOOLEAN_P));
 E void NDECL(tty_status_init);
 E void FDECL(tty_status_update, (int, genericptr_t, int, int, int, unsigned long *));