PR/49423: Martin Husemann: ping for small packets does not work in -7 or
-current
XXX: pullup 7?
exrc expects 1 argument.
Return ENOSPC instead of ENOMEM when there is no room in the buffer to
store results. ENOMEM in this subsystem means we cannot allocate more
requests or internal buffers for xforms.
simplify, no functional change