btrfs: Fix wrong comment of btrfs_alloc_tree_block()

These wrong comment was copyed from another function(expired) from
init, this patch fixed them.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Zhaolei 2015-08-06 22:16:23 +08:00 • committed by Chris Mason
commit d02207512d