Render screen effects in maprender()

I had forgotten that the game flashed and did screen-shaking when you
pressed ACTION to quicksave.

While testing for my over-30-FPS patch I stumbled across this.

desktop_version/src/Render.cpp

@@ -2495,7 +2495,7 @@ void maprender()
     }
     else
     {
-        graphics.render();
+        graphics.renderwithscreeneffects();
     }
 }