nis_call.c: Include stdint.h for uintptr_t definition
nis_call.c: Include stdint.h for uintptr_t definition

Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

thkukuk/libnsl,thkukuk/libnsl,thkukuk/libnsl