[dmd-internals] [D-Programming-Language/dmd] 7c370f: revert D2 pull #972

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: 7c370f71641c4408ddc9ebd5709e6e182e34ad2b
      https://github.com/D-Programming-Language/dmd/commit/7c370f71641c4408ddc9ebd5709e6e182e34ad2b
  Author: Walter Bright <walter at walterbright.com>
  Date:   2012-11-20 (Tue, 20 Nov 2012)

  Changed paths:
    M src/optimize.c
    M test/runnable/aliasthis.d

  Log Message:
  -----------
  revert D2 pull #972