message: Fix crash with NULL drawcall
diff: @@ -1683,7 +1683,7 @@ void D3D11PipelineStateViewer::setState()
  ui->stencils->setUpdatesEnabled(true);
  // set up thread debugging inputs
  - if(state.m_CS.ShaderDetails && (draw->flags & DrawFlags::Dispatch))
  + if(state.m_CS.ShaderDetails && draw && (draw->flags & DrawFlags::Dispatch))
  {
  ui->groupX->setEnabled(true);
  ui->groupY->setEnabled(true);
  