amd64 build failure

[Paul Goyette <paul%whooppee.com@localhost>]

with most recent zstd-related changes...

...
#      link  rescue/rescue.link
/build/netbsd-current/tools/x86_64/amd64/bin/x86_64--netbsd-gcc    --sysroot=/build/netbsd-current/dest/amd64  -Wl,-z,relro    -pie  -shared-libgcc  -static -pie  -o rescue.link  rescue.o  -Wl,-rpath-link,/build/netbsd-current/dest/amd64/lib  -L=/lib -L/build/netbsd-current/dest/amd64/usr/lib -L/build/netbsd-current/obj/amd64/crypto/external/bsd/openssh/lib cat.cro chio.cro chmod.cro cgdconfig.cro cp.cro csh.cro date.cro dd.cro df.cro domainname.cro echo.cro ed.cro expr.cro hostname.cro kill.cro ksh.cro ln.cro ls.cro mkdir.cro mt.cro mv.cro pax.cro ps.cro pwd.cro rcmd.cro rcp.cro rm.cro rmdir.cro sh.cro sleep.cro stty.cro sync.cro test.cro atactl.cro badsect.cro brconfig.cro ccdconfig.cro chown.cro clri.cro disklabel.cro dkctl.cro dmesg.cro dump.cro fdisk.cro fsck.cro fsck_ffs.cro fsdb.cro fsirand.cro gpt.cro ifconfig.cro init.cro mbrlabel.cro mknod.cro modload.cro modstat.cro modunload.cro mount.cro mount_ffs.cro newfs.cro ping.cro pppoectl.cro raidctl.cro rcorder.cro reboot.cro restore.cro rndctl.cro route.cro routed.cro savecore.cro scan_ffs.cro scsictl.cro shutdown.cro slattach.cro swapctl.cro sysctl.cro ttyflags.cro tunefs.cro umount.cro wdogctl.cro veriexecctl.cro wsconsctl.cro bzip2.cro ftp.cro grep.cro gzip.cro kdump.cro ktrace.cro ktruss.cro progress.cro ekermit.cro less.cro vi.cro chroot.cro dumpfs.cro installboot.cro vnconfig.cro tetris.cro pdisk.cro mount_ados.cro mount_cd9660.cro mount_efs.cro fsck_ext2fs.cro mount_ext2fs.cro mount_fdesc.cro mount_filecore.cro mount_kernfs.cro dump_lfs.cro fsck_lfs.cro mount_lfs.cro newfs_lfs.cro dumplfs.cro lfs_cleanerd.cro fsck_msdos.cro mount_msdos.cro newfs_msdos.cro mount_nfs.cro mount_ntfs.cro mount_null.cro mount_overlay.cro mount_procfs.cro mount_tmpfs.cro mount_umap.cro mount_union.cro ping6.cro setkey.cro scp.cro ssh.cro umbctl.cro ldd.cro  liboverride.o -lbz2 -llzma -lcrypt -ledit -lkvm -ll -lm -lrmt -lcurses -lterminfo -lutil -lz -levent -lprop -lipsec -lssh -lssl -lcrypto -lpthread /build/netbsd-current/obj/amd64/usr.bin/ldd/elf32/libldd_elf32.a /build/netbsd-current/obj/amd64/usr.bin/ldd/elf64/libldd_elf64.a 
/build/netbsd-current/tools/x86_64/amd64/lib/gcc/x86_64--netbsd/14.3.0/../../../../x86_64--netbsd/bin/ld: gzip.cro: in function `unzstd':
/build/netbsd-current/src_ro/usr.bin/gzip/unzstd.c:49:(.text+0x85d): undefined reference to `ZSTD_createDStream'
/build/netbsd-current/tools/x86_64/amd64/lib/gcc/x86_64--netbsd/14.3.0/../../../../x86_64--netbsd/bin/ld: /build/netbsd-current/src_ro/usr.bin/gzip/unzstd.c:50:(.text+0x868): undefined reference to `ZSTD_initDStream'
/build/netbsd-current/tools/x86_64/amd64/lib/gcc/x86_64--netbsd/14.3.0/../../../../x86_64--netbsd/bin/ld: /build/netbsd-current/src_ro/usr.bin/gzip/unzstd.c:75:(.text+0x90f): undefined reference to `ZSTD_decompressStream'
/build/netbsd-current/tools/x86_64/amd64/lib/gcc/x86_64--netbsd/14.3.0/../../../../x86_64--netbsd/bin/ld: /build/netbsd-current/src_ro/usr.bin/gzip/unzstd.c:76:(.text+0x91b): undefined reference to `ZSTD_isError'
/build/netbsd-current/tools/x86_64/amd64/lib/gcc/x86_64--netbsd/14.3.0/../../../../x86_64--netbsd/bin/ld: /build/netbsd-current/src_ro/usr.bin/gzip/unzstd.c:77:(.text+0x928): undefined reference to `ZSTD_getErrorName'
/build/netbsd-current/tools/x86_64/amd64/lib/gcc/x86_64--netbsd/14.3.0/../../../../x86_64--netbsd/bin/ld: /build/netbsd-current/src_ro/usr.bin/gzip/unzstd.c:87:(.text+0x97c): undefined reference to `ZSTD_freeDStream'
collect2: error: ld returned 1 exit status

*** Failed target: rescue.link
...

+---------------------+--------------------------+----------------------+
| Paul Goyette (.sig) | PGP Key fingerprint:     | E-mail addresses:    |
| (Retired)           | 1B11 1849 721C 56C8 F63A | paul%whooppee.com@localhost    |
| Software Developer  | 6E2E 05FD 15CE 9F2D 5102 | pgoyette%netbsd.org@localhost  |
| & Network Engineer  |                          | pgoyette99%gmail.com@localhost |
+---------------------+--------------------------+----------------------+