Made IVoiceChannel.UserLimit nullable

src/Discord.Net.Core/Entities/Channels/IVoiceChannel.cs

@@ -8,8 +8,8 @@ namespace Discord
     {
         /// <summary> Gets the bitrate, in bits per second, clients in this voice channel are requested to use. </summary>
         int Bitrate { get; }
-        /// <summary> Gets the max amount of users allowed to be connected to this channel at one time. A value of 0 represents no limit. </summary>
-        int UserLimit { get; }
+        /// <summary> Gets the max amount of users allowed to be connected to this channel at one time. </summary>
+        int? UserLimit { get; }
 
         /// <summary> Modifies this voice channel. </summary>
         Task ModifyAsync(Action<VoiceChannelProperties> func, RequestOptions options = null);

src/Discord.Net.Core/Entities/Channels/VoiceChannelProperties.cs

@@ -10,6 +10,6 @@
         /// <summary>
         /// The maximum number of users that can be present in a channel.
         /// </summary>
-        public Optional<int> UserLimit { get; set; }
+        public Optional<int?> UserLimit { get; set; }
     }
 }