FreeBSD: unbreak compilation on i386

tests/zfs-tests/cmd/mmap_seek.c: use correct printf specifier
module/zfs/vdev.c: vdev_clear(): correctly cast argument to
atomic_add_64().

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Martin Matuska <mm@FreeBSD.org>
Closes openzfs#18096

Author: mmatuska

module/zfs/vdev.c

@@ -4692,7 +4692,7 @@ vdev_clear(spa_t *spa, vdev_t *vd)
 	vd->vdev_stat.vs_checksum_errors = 0;
 	vd->vdev_stat.vs_dio_verify_errors = 0;
 	vd->vdev_stat.vs_slow_ios = 0;
-	atomic_store_64(&vd->vdev_outlier_count, 0);
+	atomic_store_64((volatile uint64_t *)&vd->vdev_outlier_count, 0);
 	vd->vdev_read_sit_out_expire = 0;
 
 	for (int c = 0; c < vd->vdev_children; c++)

tests/zfs-tests/cmd/mmap_seek.c

@@ -55,7 +55,7 @@ seek_expect(int fd, off_t offset, int whence, off_t expect_offset)
 		return;
 
 	int err = errno;
-	fprintf(stderr, "lseek(fd, %ld, SEEK_%s) = %ld (expected %ld)",
+	fprintf(stderr, "lseek(fd, %jd, SEEK_%s) = %jd (expected %jd)",
 	    offset, (whence == SEEK_DATA ? "DATA" : "HOLE"),
 	    seek_offset, expect_offset);
 	if (err != 0)