message: upstream: fix build after previous commit.
  uint64_t is always >= 0.
diff: @@ -10,7 +10,7 @@ namespace Envoy {
  namespace ProtobufPercentHelper {
  uint64_t checkAndReturnDefault(uint64_t default_value, uint64_t max_value) {
  - ASSERT(default_value >= 0 && default_value <= max_value);
  + ASSERT(default_value <= max_value);
  UNREFERENCED_PARAMETER(max_value);
  return default_value;
  }
  