Minor logging patch

src/Discord.Net/DiscordClient.cs

@@ -235,15 +235,15 @@ namespace Discord
 			}
 			if (_config.LogLevel >= LogMessageSeverity.Debug)
 			{
-				_channels.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Channel {e.Item.ServerId}/{e.Item.Id}");
-				_channels.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Channel {e.Item.ServerId}/{e.Item.Id}");
+				_channels.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Channel {e.Item?.ServerId ?? "[Private]"}/{e.Item.Id}");
+				_channels.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Channel {e.Item.ServerId ?? "[Private]"}/{e.Item.Id}");
 				_channels.Cleared += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Cleared Channels");
-				_members.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Member {e.Item.ServerId}/{e.Item.UserId}");
-				_members.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Member {e.Item.ServerId}/{e.Item.UserId}");
+				_members.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Member {e.Item.ServerId ?? "[Private]"}/{e.Item.UserId}");
+				_members.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Member {e.Item.ServerId ?? "[Private]"}/{e.Item.UserId}");
 				_members.Cleared += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Cleared Members");
-				_messages.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Message {e.Item.ServerId}/{e.Item.ChannelId}/{e.Item.Id}");
-				_messages.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Message {e.Item.ServerId}/{e.Item.ChannelId}/{e.Item.Id}");
-				_messages.ItemRemapped += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Remapped Message {e.Item.ServerId}/{e.Item.ChannelId}/[{e.OldId} -> {e.NewId}]");
+				_messages.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Message {e.Item.ServerId ?? "[Private]"}/{e.Item.ChannelId}/{e.Item.Id}");
+				_messages.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Message {e.Item.ServerId ?? "[Private]"}/{e.Item.ChannelId}/{e.Item.Id}");
+				_messages.ItemRemapped += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Remapped Message {e.Item.ServerId ?? "[Private]"}/{e.Item.ChannelId}/[{e.OldId} -> {e.NewId}]");
 				_messages.Cleared += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Cleared Messages");
 				_roles.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Role {e.Item.ServerId}/{e.Item.Id}");
 				_roles.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Role {e.Item.ServerId}/{e.Item.Id}");