message: Protect NULL CMreturn_buffer
diff: @@ -545,7 +545,10 @@ static void DiscardPriorPreloaded(CP_Services Svcs, Evpath_RS_Stream RS_Stream,
  RS_Stream->QueuedTimesteps = Entry->Next;
  }
  /* free item */
  + if (ItemToFree->Data)
  + {
  CMreturn_buffer(cm, ItemToFree->Data);
  + }
  free(ItemToFree);
  }
  