LU-7325 ldiskfs: use correct types for inode num

LU-7325 ldiskfs: use correct types for inode num

using signed integer for inode numbers in large EA code
resulting incorrect inode numbers when casting to
unsigned long in ext4_iget() call.

Seagate-bug-id: MRP-3025
Signed-off-by: Alexey Lyashkov <alexey.lyashkov@seagate.com>
Signed-off-by: Alexander Zarochentsev <alexander.zarochentsev@seagate.com>
Change-Id: I49e578a87c4d0f0274a9a42151675822f57c1c5f
Reviewed-on: http://review.whamcloud.com/16913
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>