Assertion failure in `xfrin_destroy`->`xfrin_log`->`dns_zone_name`

This was caught here: https://gitlab.isc.org/isc-projects/bind9/-/jobs/1285031

8967D:inline:Program terminated with signal SIGABRT, Aborted.
8968D:inline:#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
8969D:inline:[Current thread is 1 (Thread 0x7f4e801c9700 (LWP 16500))]
8970D:inline:#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
8971D:inline:#1  0x00007f4e87a05535 in __GI_abort () at abort.c:79
8972D:inline:#2  0x000055e721d56918 in assertion_failed (file=<optimized out>, line=<optimized out>, type=isc_assertiontype_require, cond=<optimized out>) at main.c:254
8973D:inline:#3  0x00007f4e888ac175 in isc_assertion_failed (file=file@entry=0x7f4e8884428a "zone.c", line=line@entry=15389, type=type@entry=isc_assertiontype_require, cond=cond@entry=0x7f4e8883da18 "(__builtin_expect(!!((zone) != ((void *)0)), 1) && __builtin_expect(!!(((const isc__magic_t *)(zone))->magic == ((('Z') << 24 | ('O') << 16 | ('N') << 8 | ('E')))), 1))") at assertions.c:46
8974D:inline:#4  0x00007f4e887bfba1 in dns_zone_name (zone=<optimized out>, buf=buf@entry=0x7f4e801c5120 "4", length=length@entry=1055) at zone.c:15391
8975D:inline:#5  0x00007f4e887b0181 in xfrin_log (xfr=xfr@entry=0x7f4e3000dc70, level=level@entry=-1, fmt=fmt@entry=0x7f4e8883b8a2 "Transfer status: %s") at xfrin.c:1604
8976D:inline:#6  0x00007f4e887b11a3 in xfrin_destroy (xfr=0x7f4e3000dc70) at xfrin.c:1476
8977D:inline:#7  dns_xfrin_detach (xfrp=xfrp@entry=0x7f4e801c5868) at xfrin.c:739
8978D:inline:#8  0x00007f4e887b22df in xfrin_recv_done (handle=<optimized out>, result=result@entry=0, region=region@entry=0x7f4e801c58d0, cbarg=cbarg@entry=0x7f4e3000dc70) at xfrin.c:1450
8979D:inline:#9  0x00007f4e88891903 in processbuffer (dnssock=dnssock@entry=0x7f4e440258b0, handlep=handlep@entry=0x7f4e801c5938) at netmgr/tcpdns.c:228
8980D:inline:#10 0x00007f4e88892011 in dnslisten_readcb (handle=<optimized out>, eresult=<optimized out>, region=<optimized out>, arg=0x7f4e440258b0) at netmgr/tcpdns.c:325
8981D:inline:#11 0x00007f4e8888d909 in read_cb (stream=<optimized out>, nread=150, buf=0x7f4e801c5a00) at netmgr/tcp.c:991
8982D:inline:#12 0x00007f4e87fddce7 in ?? () from /usr/lib/x86_64-linux-gnu/libuv.so.1
8983D:inline:#13 0x00007f4e87fde908 in ?? () from /usr/lib/x86_64-linux-gnu/libuv.so.1
8984D:inline:#14 0x00007f4e87fe34b0 in uv.io_poll () from /usr/lib/x86_64-linux-gnu/libuv.so.1
8985D:inline:#15 0x00007f4e87fd4f85 in uv_run () from /usr/lib/x86_64-linux-gnu/libuv.so.1
8986D:inline:#16 0x00007f4e8888c7ee in nm_thread (worker0=0x55e721f76218) at netmgr/netmgr.c:498
8987D:inline:#17 0x00007f4e87fa0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
8988D:inline:#18 0x00007f4e87adc4cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95