* decl.c (register_dtor_fn): Mark cleanup as used.
	* decl2.c (mark_vtable_entries): Skip nops.
	* rtti.c (get_tinfo_ptr): Mark tinfo as used.
	(build_dynamic_cast_1): Likewise.
	(tinfo_base_init): Likewise.
	(emit_tinfo_decl): Likewise.

From-SVN: r68377