Enji Cooper 6399b5e03a :nvlist_unpack__duplicate_key : check the result of nvlist_pack(3)
This fixes a potential NULL pointer dereference.

MFC after:	3 days
Reported by:	Coverity
CID:		1362051
Sponsored by:	Dell EMC Isilon
2017-05-29 18:39:28 +00:00
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