lint: use a ternary in place of an if/else block

src/Discord.Net.WebSocket/DiscordSocketClient.cs

@@ -1159,10 +1159,9 @@ namespace Discord.WebSocket
                                         {
                                             if (guild != null)
                                             {
-                                                if (data.Member.IsSpecified) // member isn't always specified...
-                                                    author = guild.AddOrUpdateUser(data.Member.Value); //per g250k, we can create an entire member now
-                                                else
-                                                    author = guild.AddOrUpdateUser(data.Author.Value); // user has no guild-specific data
+                                                author = data.Member.IsSpecified // member isn't always included, but use it when we can
+                                                    ? guild.AddOrUpdateUser(data.Member.Value)
+                                                    : guild.AddOrUpdateUser(data.Author.Value); // user has no guild-specific data
                                             }
                                             else if (channel is SocketGroupChannel)
                                                 author = (channel as SocketGroupChannel).GetOrAddUser(data.Author.Value);