fix a small race in mfi_mgmt between the checking of a ccbs completion and the sleep waiting for the completion. it is possible to get the interrupt completing the command just before the tsleep, which will never get a wakeup because the interrupt with the wakeup has already happened.
fix a small race in mfi_mgmt between the checking of a ccbs completion and
the sleep waiting for the completion. it is possible to get the interrupt
completing the command just before the tsleep, which will never get a
wakeup because the interrupt with the wakeup has already happened.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars