gateway.Gateway.Latency() appears to be broken

[Serpentiel]

I'm trying to call gateway.Gateway's Latency() method the following way:

	Handler: func(s *state.State) cmdroute.CommandHandlerFunc {
		return func(ctx context.Context, cmd cmdroute.CommandData) *api.InteractionResponseData {
			return &api.InteractionResponseData{
				Embeds: util.Embeds(
					fmt.Sprintf("🏓 Pong! Bot's latency to Discord is %dms.", s.Gateway().Latency().Milliseconds()),
				),
			}
		}
	},

which results in:

might be related to #360

[diamondburned]

Closing this since I believe it's fixed on 23140ac.