[Bug c++/88478] valgrind error in cselib_record_sets

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88478

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Code seems ok in a valgrind version of gcc trunk revision 266400
from date Nov 25, so problem looks relatively recent.