[ticket/12477] Fix logic to prevent admin-deactivated users from getting PM's.

PHPBB3-12477
[ticket/12477] Tab instead of spaces.

PHPBB3-12477
Merge pull request #2384 from prototech/ticket/12477

[ticket/12477] Fix logic to prevent admin-deactivated users from getting PM's.

* prototech/ticket/12477:
  [ticket/12477] Tab instead of spaces.
  [ticket/12477] Fix logic to prevent admin-deactivated users from getting PM's.