3910 t_look(3NSL) should never return T_ERROR
Reviewed by: Marcel Telka <marcel@telka.sk>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Dan McDonald <danmcd@omniti.com>
	[illumos-gate merge]

commit 09b0d01c5bc323b8ee7043100e09aded27cc12ab
    3910 t_look(3NSL) should never return T_ERROR