6440712 'iostat -xn' for unused devices should still show /dev/dsk names

[christopher.ho...@sun.com]

Author: cth
Repository: /hg/onnv/onnv-gate
Revision: 9754beb1b0cd8edb5315150f43679a5fa87824a3
Log message:
6440712 'iostat -xn' for unused devices should still show /dev/dsk names

Files:
        update: usr/src/cmd/stat/common/dsr.c