[WIN32K]

Go back to hiding the cursor with GreMovePointer, instead of setting NULL bitmaps. While MSDN states that psoColor and psoMask can both be NULL in DrvSetPointerShape, it doesn't explicitly say anything about both being NULL at the same time. VBox driver doesn't expect that and will crash, so most likely windows doesn't do this.

svn path=/trunk/; revision=50375

reactos/subsystems/win32/win32k/ntuser/cursoricon.c

@@ -147,15 +147,12 @@ UserSetCursor(
         if (OldCursor && CurInfo->ShowingCursor)
         {
             /* Remove the cursor */
-            //GreMovePointer(hdcScreen, -1, -1);
+            GreMovePointer(hdcScreen, -1, -1);
             DPRINT("Removing pointer!\n");
         }
 
         CurInfo->CurrentCursorObject = NULL;
         CurInfo->ShowingCursor = 0;
-
-        /* Unset the bitmaps */
-        GreSetPointerShape(hdcScreen, NULL, NULL, 0, 0, 0, 0);
     }
 
     /* Return the old cursor */