ndr: fix coda logic around in ndr_pull_security_ace()

ndr: fix coda logic around in ndr_pull_security_ace()

Sometimes an access allowed object ACE has unneeded trailing bytes,
like this:

                      aces: struct security_ace
                          type                     : SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT (5)
                          flags                    : 0x00 (0)
                                 0: SEC_ACE_FLAG_OBJECT_INHERIT
                                 0: SEC_ACE_FLAG_CONTAINER_INHERIT
                                 0: SEC_ACE_FLAG_NO_PROPAGATE_INHERIT
                                 0: SEC_ACE_FLAG_INHERIT_ONLY
                                 0: SEC_ACE_FLAG_INHERITED_ACE
                              0x00: SEC_ACE_FLAG_VALID_INHERIT (0)
                                 0: SEC_ACE_FLAG_SUCCESSFUL_ACCESS
                                 0: SEC_ACE_FLAG_FAILED_ACCESS
                          size                     : 0x0048 (72)
                          access_mask              : 0x00000100 (256)
                          object                   : union security_ace_object_ctr(case 1)
                          object: struct security_ace_object
                              flags                    : 0x00000001 (1)
                                     1: SEC_ACE_OBJECT_TYPE_PRESENT
                                     0: SEC_ACE_INHERITED_OBJECT_TYPE_PRESENT
                              type                     : union security_ace_object_type(case 1)
                              type                     : edacfd8f-ffb3-11d1-b41d-00a0c968f939
                              inherited_type           : union security_ace_object_inherited_type(case 0)
                          trustee                  : S-1-3-0
                          coda                     : union security_ace_coda(case 5)
                          ignored                  : DATA_BLOB length=32
  [0000] 00 00 00 00 00 00 00 00   00 00 00 00 00 00 00 00   ........ ........
  [0010] 00 00 00 00 00 00 00 00   00 00 00 00 00 00 00 00   ........ ........

which we need to pull in order to ignore.

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Thu Feb 13 15:15:40 UTC 2025 on atb-devel-224