Fixed ban event deserialization

src/Discord.Net/API/Gateway/GuildBanEvent.cs

@@ -2,9 +2,11 @@
 
 namespace Discord.API.Gateway
 {
-    public class GuildBanEvent : User
+    public class GuildBanEvent
     {
         [JsonProperty("guild_id")]
         public ulong GuildId { get; set; }
+        [JsonProperty("user")]
+        public User User { get; set; }
     }
 }

src/Discord.Net/DiscordSocketClient.cs

@@ -831,7 +831,7 @@ namespace Discord
                                     var data = (payload as JToken).ToObject<GuildBanEvent>(_serializer);
                                     var guild = DataStore.GetGuild(data.GuildId);
                                     if (guild != null)
-                                        await UserBanned.RaiseAsync(new User(data)).ConfigureAwait(false);
+                                        await UserBanned.RaiseAsync(new User(data.User)).ConfigureAwait(false);
                                     else
                                     {
                                         await _gatewayLogger.WarningAsync("GUILD_BAN_ADD referenced an unknown guild.").ConfigureAwait(false);
@@ -846,7 +846,7 @@ namespace Discord
                                     var data = (payload as JToken).ToObject<GuildBanEvent>(_serializer);
                                     var guild = DataStore.GetGuild(data.GuildId);
                                     if (guild != null)
-                                        await UserUnbanned.RaiseAsync(new User(data)).ConfigureAwait(false);
+                                        await UserUnbanned.RaiseAsync(new User(data.User)).ConfigureAwait(false);
                                     else
                                     {
                                         await _gatewayLogger.WarningAsync("GUILD_BAN_REMOVE referenced an unknown guild.").ConfigureAwait(false);