btrfs: replace u_long type cast with unsigned long

We don't use the u_XX types anywhere, though they're defined.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-11-28 15:31:46 +01:00
commit 1db45a35f0