[SYSDM] Fix sunrise regression CORE-17451

This fixes a regression with the AlphaBlending on single left-click
on the ros logo in general tab.
That regression was introduced by
0.4.15-dev-178-g d635ce0cc0

So it can be seen as an addendum to (#2707).

We luckily did not have any affected releases yet.

dll/cpl/sysdm/general.c

@@ -234,11 +234,10 @@ Cleanup:
                 if (hCreditsBitmap != NULL)
                     DeleteObject(hCreditsBitmap);
 
+                InvalidateRect(hwnd, NULL, FALSE);
                 top = 0;
                 timerid = 0;
             }
-            
-            InvalidateRect(hwnd, NULL, FALSE);
             break;
         case WM_TIMER:
             top += ANIM_STEP;