fix another aliasing problem

scsi_set_uint64 should just use scsi_set_uint32, similar to
what scsi_get_uint64 does.  This avoids problems on architectures
where "uint32_t" requires more alignment than "char", e.g. ARM.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

lib/scsi-lowlevel.c

@@ -300,11 +300,11 @@ scsi_set_uint64(unsigned char *c, uint64_t v)
 	uint32_t val;
 
 	val = (v >> 32) & 0xffffffff;
-	*(uint32_t *)c = htonl(val);
+	scsi_set_uint32(c, val);
 
 	c += 4;
 	val = v & 0xffffffff;
-	*(uint32_t *)c = htonl(val);
+	scsi_set_uint32(c, val);
 }
 
 inline void