Fix 'item' is used after delete.
Pointed out by Clang Static Analyzer.
Change-Id: I8eca3084c97b37015a2da1b96119a458d4eb9aa7
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3392
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Reviewed-by: John Scipione <jscipione@gmail.com>