[BUGFIX] Followup: Replace shortcut item icons with sprites

If a the linked record of a shortcut is deleted you get a Fatal error
that breaks the BE.

This patch makes sure that the correct variable types are used for
IconUtility::getSpriteIconForRecord()

Resolves: #63319
Releases: master
Change-Id: Ia7aa5237b24c0190ad87b9353f29735682cb5ebb
Reviewed-on: http://review.typo3.org/34723
Reviewed-by: Andreas Fernandez <andreas.fernandez@aspedia.de>
Tested-by: Andreas Fernandez <andreas.fernandez@aspedia.de>
Reviewed-by: Frank Nägler <typo3@naegler.net>
Tested-by: Frank Nägler <typo3@naegler.net>