The INT_TO_POINTER and POINTER_TO_INT macros must accommodate larger
pointers on 64-bit systems that don't fit into an int.
In the INT_TO_POINTER case, we have to use an extra cast to intptr_t
as an intermediate widening type to avoid complaints from the compiler
when converting from an int.
This change makes no difference on 32-bit systems.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
5f5c9a5962