message: Fix nit-picky OSX compile error
diff: @@ -1268,7 +1268,7 @@ void CombineUsageEvents(ICaptureContext &ctx, const rdcarray<EventUsage> &usage,
  uint32_t end = 0;
  ResourceUsage us = ResourceUsage::IndexBuffer;
  - for(const EventUsage u : usage)
  + for(const EventUsage &u : usage)
  {
  if(start == 0)
  {
  