[Bug libgomp/93065] libgomp: destructor missing to delete goacc_cleanup_key

[v.narang at samsung dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93065

--- Comment #1 from Vaneet Narang <v.narang at samsung dot com> ---
Bugfix patch shared:
https://gcc.gnu.org/ml/gcc-bugs/2019-12/msg02132.html