[phobos] [dlang/phobos] c8c948: make std.uni a bit safer

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/dlang/phobos
  Commit: c8c948fae82e11809d84753da1c327b68b1d1a49
      https://github.com/dlang/phobos/commit/c8c948fae82e11809d84753da1c327b68b1d1a49
  Author: Walter Bright <walter at walterbright.com>
  Date:   2016-09-16 (Fri, 16 Sep 2016)

  Changed paths:
    M std/uni.d

  Log Message:
  -----------
  make std.uni a bit safer


  Commit: 82ba1438035cffe48ee89510a1f8446f8c0e6029
      https://github.com/dlang/phobos/commit/82ba1438035cffe48ee89510a1f8446f8c0e6029
  Author: Andrei Alexandrescu <andrei at erdani.com>
  Date:   2016-09-16 (Fri, 16 Sep 2016)

  Changed paths:
    M std/uni.d

  Log Message:
  -----------
  Merge pull request #4792 from WalterBright/safer-uni

make std.uni a bit safer


Compare: https://github.com/dlang/phobos/compare/49cbf2633197...82ba1438035c