message: Fix inconsistent Unmap subresource index. Closes
diff: @@ -880,7 +880,7 @@ void D3D12ResourceManager::Apply_InitialState(ID3D12DeviceChild *live, D3D12Init
  }
  if(dst)
  - copyDst->Unmap(0, NULL);
  + copyDst->Unmap(i, NULL);
  }
  delete[] layouts;
  