fix: handle aboutToQuit() (#6159)

src/singletons/Settings.cpp

@@ -278,6 +278,11 @@ void Settings::restoreSnapshot()
     }
 }
 
+void Settings::disableSave()
+{
+    this->disableSaving = true;
+}
+
 float Settings::getClampedUiScale() const
 {
     return std::clamp(this->uiScale.getValue(), 0.2F, 10.F);

src/singletons/Settings.hpp

@@ -104,7 +104,7 @@ class Settings
     static Settings *instance_;
     Settings *prevInstance_ = nullptr;
 
-    const bool disableSaving;
+    bool disableSaving;
 
 public:
     Settings(const Args &args, const QString &settingsDirectory);
@@ -120,6 +120,8 @@ public:
     void saveSnapshot();
     void restoreSnapshot();
 
+    void disableSave();
+
     FloatSetting uiScale = {"/appearance/uiScale2", 1};
     BoolSetting windowTopMost = {"/appearance/windowAlwaysOnTop", false};