btrfs: fix a comment typo

Just fix a typo in the code comment.

Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Geliang Tang 2015-10-04 17:05:32 +08:00 • committed by David Sterba
commit 8cd1e73111