CMenuWidget: fix simplified up/down code

- supplement to a0e73ac341


Origin commit data
------------------
Commit: 4003d5f434
Author: Michael Liebmann <tuxcode.bbg@gmail.com>
Date: 2013-07-01 (Mon, 01 Jul 2013)

src/gui/widget/menue.cpp

@@ -640,6 +640,7 @@ int CMenuWidget::exec(CMenuTarget* parent, const std::string &)
 								if (fade && washidden)
 									fader.StartFadeIn();
 								checkHints();
+								pos = selected;
 								paint();
 								break;
 						}