fix: don't construct images after we're quitting (#6213)

CHANGELOG.md

@@ -30,6 +30,7 @@
 - Bugfix: Fixed shared chat badges displaying pixelated when Chatterino is scaled too much. (#6146)
 - Bugfix: Fixed a crash that could occur when eventsub was enabled and Chatterino was attached to a conhost on Windows that was later gone. (#6161)
 - Bugfix: Fixed a crash that could occur an eventsub connection's keepalive timer would run after the connection was dead, causing the keepalive timer to use-itself-after-free. (#6204)
+- Bugfix: Fixed a crash that could occur when an image started loading mid app shutdown. (#6213)
 - Bugfix: Fixed some minor typos. (#6196)
 - Dev: Mini refactor of Split. (#6148)
 - Dev: Conan will no longer generate a `CMakeUserPresets.json` file. (#6117)

src/Application.cpp

@@ -2,7 +2,6 @@
 
 #include "common/Args.hpp"
 #include "common/Channel.hpp"
-#include "common/QLogging.hpp"
 #include "common/Version.hpp"
 #include "controllers/accounts/AccountController.hpp"
 #include "controllers/commands/Command.hpp"
@@ -34,8 +33,6 @@
 #include "providers/bttv/BttvLiveUpdates.hpp"
 #include "providers/chatterino/ChatterinoBadges.hpp"
 #include "providers/ffz/FfzBadges.hpp"
-#include "providers/seventv/eventapi/Dispatch.hpp"
-#include "providers/seventv/eventapi/Subscription.hpp"
 #include "providers/seventv/SeventvBadges.hpp"
 #include "providers/seventv/SeventvEventAPI.hpp"
 #include "providers/twitch/ChannelPointReward.hpp"

src/messages/Image.cpp

@@ -39,6 +39,14 @@ Frames::Frames(QList<Frame> &&frames)
     : items_(std::move(frames))
 {
     assertInGuiThread();
+    auto *app = tryGetApp();
+    if (app == nullptr)
+    {
+        qCDebug(chatterinoImage)
+            << "Frames constructor called while app is shutting down";
+        return;
+    }
+
     DebugCount::increase("images");
     if (!this->empty())
     {
@@ -50,7 +58,7 @@ Frames::Frames(QList<Frame> &&frames)
         DebugCount::increase("animated images");
 
         this->gifTimerConnection_ =
-            getApp()->getEmotes()->getGIFTimer().signal.connect([this] {
+            app->getEmotes()->getGIFTimer().signal.connect([this] {
                 this->advance();
             });
 
@@ -67,8 +75,7 @@ Frames::Frames(QList<Frame> &&frames)
         else
         {
             this->durationOffset_ = std::min<int>(
-                int(getApp()->getEmotes()->getGIFTimer().position() %
-                    totalLength),
+                int(app->getEmotes()->getGIFTimer().position() % totalLength),
                 60000);
         }
         this->processOffset();