fix: close logging-channels when closing channels (#5592)

Co-authored-by: kornes <28986062+kornes@users.noreply.github.com>
Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/Application.cpp

@@ -149,6 +149,7 @@ Application::Application(Settings &_settings, const Paths &paths,
     , args_(_args)
     , themes(new Theme(paths))
     , fonts(new Fonts(_settings))
+    , logging(new Logging(_settings))
     , emotes(new Emotes)
     , accounts(new AccountController)
     , hotkeys(new HotkeyController)
@@ -175,7 +176,6 @@ Application::Application(Settings &_settings, const Paths &paths,
     , ffzEmotes(new FfzEmotes)
     , seventvEmotes(new SeventvEmotes)
     , seventvEventAPI(makeSeventvEventAPI(_settings))
-    , logging(new Logging(_settings))
     , linkResolver(new LinkResolver)
     , streamerMode(new StreamerMode)
     , twitchUsers(new TwitchUsers)
@@ -503,6 +503,7 @@ PubSub *Application::getTwitchPubSub()
 ILogging *Application::getChatLogger()
 {
     assertInGuiThread();
+    assert(this->logging);
 
     return this->logging.get();
 }
@@ -697,4 +698,9 @@ IApplication *getApp()
     return INSTANCE;
 }
 
+IApplication *tryGetApp()
+{
+    return INSTANCE;
+}
+
 }  // namespace chatterino