[Bug middle-end/67649] trunk build with valgrind fail in get_def_blocks_for

[miyuki at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67649

--- Comment #12 from Mikhail Maltsev <miyuki at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #10)
> A gave your patch a quick spin on gcc112 (compile farm machine).
> It fixes the issue.

Thanks, Markus. I committed the fix.