remove singletons when qt is still initialized; refs #170

src/browser.hxx

@@ -241,6 +241,8 @@ class Browser: public QMainWindow, protected Ui::Browser {
     ~Browser() {
       TRC;
       QWebSettings::clearIconDatabase();
+      qbrowserlib::Settings::purge(); // free singleton
+      qbrowserlib::ErrorLog::purge(); // free singleton
     }
 
     //! Whitelisting

src/qbrowserlib/errorlog.hxx

@@ -26,8 +26,11 @@ namespace qbrowserlib {
     public:
       //! Singleton
       static ErrorLog& instance(QWidget* p=0) {
-        static ErrorLog _instance(p);
-        return _instance;
+        static ErrorLog* _instance(new ErrorLog(p));
+        return *_instance;
+      }
+      static void purge() {
+        delete &instance();
       }
     private: // singleton
       ErrorLog(const ErrorLog&);

src/qbrowserlib/settings.hxx

@@ -39,8 +39,13 @@ namespace qbrowserlib {
       //! Singleton
       static Settings& instance(MimeTypes mimetypes=MimeTypes(), QWidget* p=0,
                                 QSettings* settings=0, bool autoWrite=true) {
-        static Settings _instance(mimetypes, p, settings, autoWrite);
-        return _instance;
+        static Settings* _instance
+          (new Settings(mimetypes, p, settings, autoWrite));
+        return *_instance;
+      }
+
+      static void purge() {
+        delete &instance();
       }
       
     private: