Fix a little bug in recents media menu.

When cleared the menu was not refreshed.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/gui/qt4/recents.cpp

@@ -89,7 +89,7 @@ void RecentsMRL::clear()
     if ( stack->isEmpty() )
         return;
     stack->clear();
-    if( !isActive ) QVLCMenu::updateRecents( p_intf );
+    if( isActive ) QVLCMenu::updateRecents( p_intf );
     save();
 }