Explicitly destroy static Glib::RefPtr<>s on exit (fixes #3636)

rtgui/cursormanager.cc

@@ -81,6 +81,29 @@ void CursorManager::init (Glib::RefPtr<Gdk::Window> mainWindow)
     window = mainWindow;
 }
 
+void CursorManager::cleanup()
+{
+    cAdd.reset();
+    cAddPicker.reset();
+    cCropDraw.reset();
+    cCrosshair.reset();
+    cHandClosed.reset();
+    cHandOpen.reset();
+    cEmpty.reset();
+    cMoveBL.reset();
+    cMoveBR.reset();
+    cMoveL.reset();
+    cMoveR.reset();
+    cMoveTL.reset();
+    cMoveTR.reset();
+    cMoveX.reset();
+    cMoveY.reset();
+    cMoveXY.reset();
+    cRotate.reset();
+    cWB.reset();
+    cWait.reset();
+}
+
 /* Set the cursor of the given window */
 void CursorManager::setCursor (Glib::RefPtr<Gdk::Window> window, CursorShape shape)
 {

rtgui/cursormanager.h

@@ -82,6 +82,7 @@ private:
 
 public:
     void init                         (Glib::RefPtr<Gdk::Window> mainWindow);
+    void cleanup                      ();
     static void setWidgetCursor       (Glib::RefPtr<Gdk::Window> window, CursorShape shape);
     static void setCursorOfMainWindow (Glib::RefPtr<Gdk::Window> window, CursorShape shape);
 };

rtgui/filmsimulation.cc

@@ -262,6 +262,13 @@ void ClutComboBox::setBatchMode(bool yes)
 }
 
 
+void ClutComboBox::cleanup()
+{
+    cm.reset();
+    cm2.reset();
+}
+
+
 void ClutComboBox::updateUnchangedEntry()
 {
     auto c = m_model()->children();

rtgui/filmsimulation.h

@@ -18,6 +18,8 @@ public:
     void setSelectedClut( Glib::ustring filename );
     void setBatchMode(bool yes);
 
+    static void cleanup();
+
 private:
     void updateUnchangedEntry(); // in batchMode we need to add an extra entry "(Unchanged)". We do this whenever the widget is mapped (connecting to signal_map()), unless options.multiDisplayMode (see the comment below about cm2 in this case)
 

rtgui/guiutils.cc

@@ -581,6 +581,15 @@ void MyExpander::init()
     }
 }
 
+void MyExpander::cleanup()
+{
+    inconsistentImage.reset();
+    enabledImage.reset();
+    disabledImage.reset();
+    openedImage.reset();
+    closedImage.reset();
+}
+
 MyExpander::MyExpander(bool useEnabled, Gtk::Widget* titleWidget) :
     enabled(false), inconsistent(false), flushEvent(false), expBox(nullptr),
     child(nullptr), headerWidget(nullptr), statusImage(nullptr),

rtgui/guiutils.h

@@ -231,6 +231,7 @@ public:
 
     /// Initialize the class by loading the images
     static void init();
+    static void cleanup();
 
     Glib::SignalProxy1< bool, GdkEventButton* > signal_button_release_event()
     {

rtgui/rtwindow.cc

@@ -857,6 +857,16 @@ bool RTWindow::on_delete_event (GdkEventAny* event)
     cacheMgr->closeCache ();  // also makes cleanup if too large
     WhiteBalance::cleanup();
     ProfilePanel::cleanup();
+    ClutComboBox::cleanup();
+    MyExpander::cleanup();
+    mainWindowCursorManager.cleanup();
+    editWindowCursorManager.cleanup();
+    BatchQueueEntry::savedAsIcon.reset();
+    FileBrowserEntry::editedIcon.reset();
+    FileBrowserEntry::recentlySavedIcon.reset();
+    FileBrowserEntry::enqueuedIcon.reset();
+    FileBrowserEntry::hdr.reset();
+    FileBrowserEntry::ps.reset();
 
     if (!options.windowMaximized) {
         get_size (options.windowWidth, options.windowHeight);