message: reactor.network.resolve: Fix warning.
diff: @@ -153,7 +153,7 @@ namespace elle
  resolution.run();
  return resolution.end_points();
  }
  - catch (typename Resolution<Protocol>::TryAgain)
  + catch (typename Resolution<Protocol>::TryAgain const&)
  {
  ELLE_DUMP("trying again to resolve %s:%s", hostname, service);
  --opt.num_attempts;
  