[PATCH] Fix PR19408 -- Missing static this adjustment in a vtordisp thunk

[Timur Iskhodzhanov]

  See the follow-up at http://reviews.llvm.org/D3410

  It looks like in fact the value ThisOffset was wrong :)
  So after D3410 fix "ThisOffset" remains as described in the ComputeThisOffset comment.

http://reviews.llvm.org/D3400