SLOT_IS_GOING_AWAY
if (slot->flags & SLOT_IS_GOING_AWAY)
slot->flags |= SLOT_IS_GOING_AWAY;
else if (!(slot->flags & SLOT_IS_GOING_AWAY))
} else if (!(slot->flags & SLOT_IS_GOING_AWAY)) {
if (slot->flags & SLOT_IS_GOING_AWAY) {