Qt MenuOrTextWindow tweak

Funnel all potential "<action> called before we know if Menu or Text"
warnings through a common routine.  Aside from rephrasing a message
which no one should ever see, there's no change in behavior.

win/Qt/qt_menu.h

@@ -179,6 +179,8 @@ private:
 	NetHackQtWindow* actual;
         QWidget *parent;
 
+        static void MenuOrText_too_soon_warning(const char *);
+
 public:
 	NetHackQtMenuOrTextWindow(QWidget *parent = NULL);