Fixed a memory leak in Settings.

es-app/src/main.cpp

@@ -616,6 +616,7 @@ int main(int argc, char* argv[])
     CollectionSystemsManager::deinit();
     SystemData::deleteSystems();
     NavigationSounds::getInstance()->deinit();
+    Settings::deinit();
 
     // Call this ONLY when linking with FreeImage as a static library.
     #if defined(FREEIMAGE_LIB)

es-core/src/Settings.cpp

@@ -72,10 +72,19 @@ Settings* Settings::getInstance()
     return sInstance;
 }
 
+void Settings::deinit()
+{
+    if (sInstance) {
+        delete sInstance;
+        sInstance = nullptr;
+    }
+}
+
 void Settings::setDefaults()
 {
     mBoolMap.clear();
     mIntMap.clear();
+    mStringMap.clear();
 
     // All settings are in pairs of default values and current values.
     // As such, in this function we set these pairs identically.

es-core/src/Settings.h

@@ -18,6 +18,7 @@ class Settings
 {
 public:
     static Settings* getInstance();
+    static void deinit();
 
     void loadFile();
     void saveFile();