[macruby-changes] [MacRuby/MacRuby] 319f94: fix build error with clang of Xcode 4.2

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  Branch: refs/heads/master
  Home:   https://github.com/MacRuby/MacRuby

  Commit: 319f94be50de492b66e6a9c8d7138c4af04b3d58
      https://github.com/MacRuby/MacRuby/commit/319f94be50de492b66e6a9c8d7138c4af04b3d58
  Author: Watson <watson1978 at gmail.com>
  Date:   2011-10-12 (Wed, 12 Oct 2011)

  Changed paths:
    M vm.cpp

  Log Message:
  -----------
  fix build error with clang of Xcode 4.2