git: sys/vfs/hammer: Remove unused local variable

[Tomohiro Kusumi]

commit 38f032a9e7b9a9e3a6aaf6eb2dfbf540971beb99
Author: Tomohiro Kusumi <kusumi.tomohiro at gmail.com>
Date:   Mon Apr 11 20:32:22 2016 +0900

    sys/vfs/hammer: Remove unused local variable
    
    added by de75bb2.
    (only hammer_format_freemap() needs layer1 counter)
    
    Add some comments.

Summary of changes:
 sys/vfs/hammer/hammer_volume.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/38f032a9e7b9a9e3a6aaf6eb2dfbf540971beb99


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