[SSSD] [sssd PR#755][comment] ad: replace ARRAY_SIZE with N_ELEMENTS

[jhrozek]

  URL: https://github.com/SSSD/sssd/pull/755
Title: #755: ad: replace ARRAY_SIZE with N_ELEMENTS

jhrozek commented:
"""
Thanks @pbrezina the error looked like something wrong with the install to me, that's
why I asked you to look.

Pushed to master:
 * e1ff063ffa4ad459bd0c8a9da56abf8379401dbe
 * e32920a9c7998476b596507762b28fcf81f6a456
and sssd-1-16:
 * 911d7bb589c29c10c581d682e691364a88d35602
 * 0a27fba0a34a6bc1cc23607dd4dc14cdc6803eb
"""

See the full comment at https://github.com/SSSD/sssd/pull/755#issuecomment-464391158