fix: ensure twitchchannel dtor doesn't do stuff if we're quitting (#6271)

src/providers/twitch/TwitchChannel.cpp

@@ -191,6 +191,11 @@ TwitchChannel::TwitchChannel(const QString &name)
 
 TwitchChannel::~TwitchChannel()
 {
+    if (isAppAboutToQuit())
+    {
+        return;
+    }
+
     getApp()->getTwitch()->dropSeventvChannel(this->seventvUserID_,
                                               this->seventvEmoteSetID_);