Fix use of HASH_FIND() in RemoveScreenPointerMapping()
Created by: bnguyen0
Replace HASH_FIND() with the convenience macro HASH_FIND_PTR() in RemoveScreenPointerMapping() and ScreenFromPointer(), to be consistent with AddScreenPointerMapping(). This has the side-effect of fixing invalid usage of the original HASH_FIND() macro in RemoveScreenPointerMapping().
Signed-Off-By: Brian Nguyen brnguyen@nvidia.com Fixes #3 (closed)