Allow wxPreferencesEditor::Dismiss() to work when using modal dialogs too.

The modal dialog case is not really different, the dialog may still need to be
dismissed if the associated object doesn't exist any longer.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74010 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/preferences.h

@@ -104,8 +104,7 @@ public:
     // platform, i.e. depending on whether the dialog is modal or not.
     virtual void Show(wxWindow* parent);
 
-    // Hide the currently shown dialog, if any. This doesn't do anything on the
-    // platforms using modal preferences dialogs but should be called to
+    // Hide the currently shown dialog, if any. This is typically used to
     // dismiss the dialog if the object whose preferences it is editing was
     // closed.
     void Dismiss();