fix race in place termination
fix race in place termination

A place claimed to be done according to `place-wait` before its
clean-up actions ran, including flushing output ports. Fix the
order.

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket