Make sure we only request our peer to start processing descriptors if it isn't currently doing so.  Fixes hangs on large data transfers.
Make sure we only request our peer to start processing descriptors if it
isn't currently doing so.  Fixes hangs on large data transfers.

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