candychencan 0ca5261be4 Fix NULL deref in kcf_remove_mech_provider
In the default case the function must return to avoid dereferencing
'prov_mech' which will be NULL.

Reviewed-by: Tom Caputi <tcaputi@datto.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: candychencan <chen.can2@zte.com.cn>
Closes #5134
2016-09-30 16:04:43 -07:00
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