6476321 fix for 6461190 breaks lpstat -p, -o, -v, ... (fix cast)

[norm.jac...@sun.com]

Author: jacobs
Repository: /hg/onnv/onnv-gate
Revision: e6c7f3b6c43114a1c66d6200ce821c45a3a700aa
Log message:
6476321 fix for 6461190 breaks lpstat -p, -o, -v, ... (fix cast)

Files:
        update: usr/src/lib/nsswitch/files/common/getprinter.c