Applying suggested changes to TargetUserType

src/Discord.Net.Core/Entities/Invites/TargetUserType.cs

@@ -2,6 +2,8 @@ namespace Discord
 {
     public enum TargetUserType
     {
+        /// <summary> The invite target user type is not defined. </summary>
+        NotDefined = 0,
         /// <summary> The invite is for a Go Live stream. </summary>
         Stream = 1
     }

src/Discord.Net.WebSocket/DiscordSocketClient.cs

@@ -1650,16 +1650,12 @@ namespace Discord.WebSocket
                                             return;
                                         }
 
-                                        SocketGuildUser inviter = null;
-                                        if (data.Inviter.IsSpecified)
-                                        {
-                                            inviter = guild.GetUser(data.Inviter.Value.Id);
-                                            if (inviter == null)
-                                                inviter = guild.AddOrUpdateUser(data.Inviter.Value);
-                                        }
+                                        SocketGuildUser inviter = data.Inviter.IsSpecified
+                                            ? (guild.GetUser(data.Inviter.Value.Id) ?? guild.AddOrUpdateUser(data.Inviter.Value))
+                                            : null;
 
-                                        SocketUser target =  data.TargetUser.IsSpecified
-                                            ? (guild.GetUser(data.TargetUser.Value.Id) ?? SocketUnknownUser.Create(this, State, data.TargetUser.Value))
+                                        SocketUser target = data.TargetUser.IsSpecified
+                                            ? (guild.GetUser(data.TargetUser.Value.Id) ?? (SocketUser)SocketUnknownUser.Create(this, State, data.TargetUser.Value))
                                             : null;
 
                                         var invite = SocketInvite.Create(this, guild, channel, inviter, target, data);

src/Discord.Net.WebSocket/Entities/Invites/SocketInvite.cs

@@ -85,9 +85,9 @@ namespace Discord.WebSocket
         /// </summary>
         public SocketUser TargetUser { get; private set; }
         /// <summary>
-        ///     Gets the type of the user targeted by this invite if available.
+        ///     Gets the type of the user targeted by this invite.
         /// </summary>
-        public TargetUserType? TargetUserType { get; private set; }
+        public TargetUserType TargetUserType { get; private set; }
 
         /// <inheritdoc />
         public string Code => Id;
@@ -117,7 +117,7 @@ namespace Discord.WebSocket
             MaxUses = model.MaxUses;
             Uses = model.Uses;
             _createdAtTicks = model.CreatedAt.UtcTicks;
-            TargetUserType = model.TargetUserType.IsSpecified ? model.TargetUserType.Value : default(TargetUserType?);
+            TargetUserType = model.TargetUserType.IsSpecified ? model.TargetUserType.Value : TargetUserType.NotDefined;
         }
 
         /// <inheritdoc />