MasterWord: Rectify resizing game window

Previously resizing the window did not take into account the
height of the status bar. The board now fixes its size on reset
and allows the Window to auto shrink to the perfect dimensions.

Userland/Games/MasterWord/WordGame.cpp

@@ -48,6 +48,7 @@ void WordGame::reset()
             reset();
         }
     }
+    set_fixed_size(game_size());
     clear_message();
     update();
 }