Close mpv window on module close

src/module/module_qt_window.cc

@@ -213,7 +213,8 @@ module_qt_window_new(struct module_qt_window_s **win, struct queue *queue, lkt_d
 static void
 module_qt_window_close(struct module_qt_window_s *win)
 {
-    RETURN_UNLESS(win && win->mpv_widget, "Invalid arguments", NOTHING);
+    RETURN_UNLESS(win && win->mpv_widget && win->main_window, "Invalid arguments", NOTHING);
+    ___module_qt_window_close(win);
 }
 
 static void

src/module/qt_window/mpvwidget_interface.cc

@@ -61,3 +61,10 @@ ___module_qt_window_toggle_pause(struct module_qt_window_s *win)
 {
     return win->mpv_widget->toggle_pause();
 }
+
+bool
+___module_qt_window_close(struct module_qt_window_s *win)
+{
+    delete(win->main_window);
+    return true;
+}

src/module/qt_window/mpvwidget_interface.hh

@@ -12,3 +12,4 @@ bool ___module_qt_window_set_volume(struct module_qt_window_s *, int);
 bool ___module_qt_window_set_position(struct module_qt_window_s *, int);
 bool ___module_qt_window_load_file(struct module_qt_window_s *, const char *);
 bool ___module_qt_window_toggle_pause(struct module_qt_window_s *);
+bool ___module_qt_window_close(struct module_qt_window_s *);