message: Make sure to set m_LastCmdBufferID in vkCmdWaitEvents
  * Without this, it's treated as a host operation not a queue/command
  operation and isn't placed correctly in the event stream.
diff: @@ -668,6 +668,9 @@ bool WrappedVulkan::Serialise_vkCmdWaitEvents(
  SERIALISE_ELEMENT(VkPipelineStageFlagBits, srcStages, (VkPipelineStageFlagBits)srcStageMask);
  SERIALISE_ELEMENT(VkPipelineStageFlagBits, destStages, (VkPipelineStageFlagBits)dstStageMask);
  + if(m_State < WRITING)
  + m_LastCmdBufferID = cmdid;
  +
  // we don't serialise the original events as we are going to replace this
  // with our own
  