Coverity flagged this condition: The condition
offset == 0 && offset == 65535
can never be true because offset cannot be equal
to two different values at the same time.
Submitted by: bret_ketchum@dell.com
Reported by: Coverity
Reviewed by: tsoome, cem
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D26144