[phobos] [D-Programming-Language/phobos] 3a9bb9: Remove FUD warning

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: 3a9bb9363bfaeed7c622ed8ae04bdc84f7b7d575
      https://github.com/D-Programming-Language/phobos/commit/3a9bb9363bfaeed7c622ed8ae04bdc84f7b7d575
  Author: amaury <amaury at fb.com>
  Date:   2016-03-20 (Sun, 20 Mar 2016)

  Changed paths:
    M std/bitmanip.d

  Log Message:
  -----------
  Remove FUD warning


  Commit: 84d2c220d48f2795b107a51277d1ed5d4063c403
      https://github.com/D-Programming-Language/phobos/commit/84d2c220d48f2795b107a51277d1ed5d4063c403
  Author: H. S. Teoh <hsteoh at quickfur.ath.cx>
  Date:   2016-03-24 (Thu, 24 Mar 2016)

  Changed paths:
    M std/bitmanip.d

  Log Message:
  -----------
  Merge pull request #4097 from deadalnix/removewarn

Remove FUD warning


Compare: https://github.com/D-Programming-Language/phobos/compare/9c8f1a35da6d...84d2c220d48f