inproper hack for compilation with emsvc4. i don't know how to fix it:

"'GUI::Dialog::open' : illegal call of non-static member function"

svn-id: r17151

scumm/dialogs.cpp

@@ -656,7 +656,9 @@ void ValueDisplayDialog::handleKeyDown(uint16 ascii, int keycode, int modifiers)
 }
 
 void ValueDisplayDialog::open() {
+#ifndef _WIN32_WCE
 	GUI::Dialog::open();
+#endif
 	setResult(_value);
 	_timer = getMillis() + kDisplayDelay;
 }