Don't call virtual method from base dtor

libraries/shared/src/SettingHandle.h

@@ -46,7 +46,7 @@ namespace Setting {
         Handle(const QString& key, const T& defaultValue) : Interface(key), _defaultValue(defaultValue) {}
         Handle(const QStringList& path, const T& defaultValue) : Handle(path.join("/"), defaultValue) {}
         
-        virtual ~Handle() { save(); }
+        virtual ~Handle() { deinit(); }
         
         // Returns setting value, returns its default value if not found
         T get() { return get(_defaultValue); }

libraries/shared/src/SettingInterface.cpp

@@ -76,12 +76,6 @@ namespace Setting {
 
         // Register cleanupPrivateInstance to run inside QCoreApplication's destructor.
         qAddPostRoutine(cleanupPrivateInstance);
-    }    
-    
-    Interface::~Interface() {
-        if (privateInstance) {
-            privateInstance->removeHandle(_key);
-        }
     }
     
     void Interface::init() {
@@ -101,6 +95,16 @@ namespace Setting {
             load();
         }
     }
+
+    void Interface::deinit() {
+        if (privateInstance) {
+            // Save value to disk
+            save();
+
+            privateInstance->removeHandle(_key);
+        }
+    }
+
     
     void Interface::maybeInit() {
         if (!_isInitialized) {

libraries/shared/src/SettingInterface.h

@@ -30,10 +30,11 @@ namespace Setting {
         
     protected:
         Interface(const QString& key) : _key(key) {}
-        virtual ~Interface();
+        virtual ~Interface() = default;
 
         void init();
         void maybeInit();
+        void deinit();
         
         void save();
         void load();