btrfs: cleanup: remove no-used alloc_chunk in btrfs_check_data_free_space()
btrfs: cleanup: remove no-used alloc_chunk in btrfs_check_data_free_space()

int alloc_chunk is never used in this function, remove it.

Signed-off-by: Zhao Lei <aacdd228f50c574b28b524b23f12fb9d52d6e0e3@cn.fujitsu.com>
Signed-off-by: David Sterba <a2ce9d316ca04d17b520237d2846a218b8284e52@suse.cz>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs