Marcelo Araujo daaa9bf1df Check if pthread_create(3) successfully created the thread prior to call
pthread_join(3). The variable tid is not yet initialized in case
the authentication fails at early stage, that would lead pthread_join be
called with an uninitialized variable.

CID:		1375950
Reported by:	Coverity, cem
Reviewed by:	cem
MFC after:	3 weeks.
Sponsored by:	iXsystems, Inc.
Differential Revision:	https://reviews.freebsd.org/D11150
2017-06-16 01:26:01 +00:00
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