llvm_release_context() calls llvm_enter_fatal_on_oom(), but it never
calls llvm_leave_fatal_on_oom(). Isn't that a clear leak?
(spotted this while investigating
https://www.postgresql.org/message-id/a53cacb0-8835-57d6-31e4-4c5ef196de1a@deepbluecap.com,
but it seems unrelated)
- Heikki