refactor: deduplicate IRC parsing (#5678)

src/providers/twitch/TwitchChannel.cpp

@@ -452,8 +452,8 @@ void TwitchChannel::addChannelPointReward(const ChannelPointReward &reward)
                 if (reward.id == msg.rewardID)
                 {
                     IrcMessageHandler::instance().addMessage(
-                        msg.message.get(), shared_from_this(),
-                        msg.originalContent, *server, false, false);
+                        msg.message.get(), *this, this, msg.originalContent,
+                        *server, false, false);
                     return true;
                 }
                 return false;
@@ -1356,8 +1356,6 @@ void TwitchChannel::loadRecentMessages()
                 {
                     msgs.push_back(msg);
                 }
-
-                tc->addRecentChatter(msg->displayName);
             }
 
             getApp()->getTwitch()->getMentionsChannel()->fillInMissingMessages(