Fix mising of signed/unsigned types in WindowManager::showClassQuestionDialog

apps/openmw/mwgui/window_manager.cpp

@@ -691,7 +691,7 @@ namespace MWGui
         const char *id;
         // Specialization points to match, in order: Stealth, Combat, Magic
         // Note: Order is taken from http://www.uesp.net/wiki/Morrowind:Class_Quiz
-        int points[3];
+        unsigned int points[3];
     };
 }