Avoid that clang reports the following warning when building in 32-bit mode:
sg/syzkaller1.c:405:34: error: implicit conversion from 'unsigned long long' to
'uintptr_t' (aka 'unsigned int') changes value from 18446744073709551615
to 4294967295 [-Werror,-Wconstant-conversion]
0x32ul, 0xfffffffffffffffful, 0x0ul, 0, 0, 0);
^~~~~~~~~~~~~~~~~~~~
Signed-off-by: Bart Van Assche <bvanassche@acm.org>