message: Fix compilation of single flush validate
diff: @@ -449,7 +449,7 @@ void WrappedVulkan::SubmitAndFlushImageStateBarriers(ImageBarrierSequence &barri
  };
  #if ENABLED(SINGLE_FLUSH_VALIDATE)
  - for(auto it = queueBatch.begin(); it != queueBatch.end(); ++it)
  + for(auto it = batch.begin(); it != batch.end(); ++it)
  {
  vkr = ObjDisp(cmd)->BeginCommandBuffer(Unwrap(cmd), &beginInfo);
  RDCASSERTEQUAL(vkr, VK_SUCCESS);
  