message: Fixes typo in logging message.
diff: @@ -584,7 +584,7 @@ void BufferAssignment::AddAssignment(BufferAllocation* allocation,
  }
  if (alias_analysis().BufferLivesOut(buffer)) {
  - VLOG(3) << "HloBuffer lives out" << buffer.ToString();
  + VLOG(3) << "HloBuffer lives out: " << buffer.ToString();
  VLOG(3) << "Set maybe live out: " << allocation->ToString();
  allocation->set_maybe_live_out(true);
  }
  