handler: Fixed issue caused by trying to post empty post. Root cause is not found, but offending posts will be ignored.

internal/bot/handler.go

@@ -96,6 +96,12 @@ func handler(event *irc.Event, client *irc.Client) {
 				text = util.RemoveNPCAttribution(event.Text)
 			}
 
+			// Do not dispatch empty messages.
+			if len(text) < 1 || len(nick) < 1 || len(kind) < 1 {
+				log.Println("Ignoring empty message from:", event.Nick)
+				break
+			}
+
 			// Dispatch it.
 			bot.handlePost(channel.Name(), ChannelPost{
 				Account: account,