In nvme_qpair_complete_tracker, make sure we got a valid request in the
tracker that is being completed.
This should never occur in practice, but safeguard against it in case of
programmer error. Fixes a scan-build warning about potential NULL
dereference.
Change-Id: Id82af604d2a5ed5de0aeccf3affa1900f6712ebe
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
5717784633