From 3ff4e3d5066da6db2734be704433983071f6ffa6 Mon Sep 17 00:00:00 2001
From: Chris Johnston <chjohnston@protonmail.com>
Date: Sat, 23 Nov 2019 09:58:13 -0800
Subject: [PATCH] fix: #1421 (in a better way) Return empty set when
 ActiveClients is null (#1422)

This change ensures that SocketUser.ActiveClients will not return null, but instead an empty set by default. This can happen if the client has not recieved a presence update for a user, or if the user is not cached.
---
 src/Discord.Net.WebSocket/Entities/Users/SocketUser.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Discord.Net.WebSocket/Entities/Users/SocketUser.cs b/src/Discord.Net.WebSocket/Entities/Users/SocketUser.cs
index d4798bedd..09c4165f4 100644
--- a/src/Discord.Net.WebSocket/Entities/Users/SocketUser.cs
+++ b/src/Discord.Net.WebSocket/Entities/Users/SocketUser.cs
@@ -40,7 +40,7 @@ namespace Discord.WebSocket
         /// <inheritdoc />
         public UserStatus Status => Presence.Status;
         /// <inheritdoc />
-        public IImmutableSet<ClientType> ActiveClients => Presence.ActiveClients;
+        public IImmutableSet<ClientType> ActiveClients => Presence.ActiveClients ?? ImmutableHashSet<ClientType>.Empty;
         /// <summary>
         ///     Gets mutual guilds shared with this user.
         /// </summary>