Fix segfault in macOS with 1989/paul

The problem was that the int * needed to be a long *. It became apparent
to me when evaluating it with lldb as I noticed a pointer was long, not
an int. This does not cause a problem with linux. I have no 32-bit
system to test but I don't believe this will be an actual problem.

1989/paul/Makefile

@@ -130,7 +130,6 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: this entry will likely dump core with arm64 chips."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable