git: sbin/newfs_hammer2: Fix usage() output

[Tomohiro Kusumi]

commit c88576bcee7f28106d09a7527a0b51bd7b67977b
Author: Tomohiro Kusumi <kusumi.tomohiro at gmail.com>
Date:   Sun Aug 11 12:55:00 2019 +0900

    sbin/newfs_hammer2: Fix usage() output
    
    Sync with newfs_hammer2(8).
    Unlike HAMMER1, label name via -L is optional.

Summary of changes:
 sbin/newfs_hammer2/newfs_hammer2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/c88576bcee7f28106d09a7527a0b51bd7b67977b


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