message: Fix missing case of -Wrange-loop-analysis
  Leftover from
diff: @@ -51,7 +51,7 @@ bool PreviousPrioritiesRetryPriority::adjustForAttemptedPriorities(
  // This allows us to fall back to the unmodified priority load when we run out of priorities
  // instead of failing to route requests.
  if (total_availability == 0) {
  - for (auto&& excluded_priority : excluded_priorities_) {
  + for (auto excluded_priority : excluded_priorities_) {
  excluded_priority = false;
  }
  attempted_hosts_.clear();
  