Comment 2 for bug 1797926

StacktraceTop:
 isc_assertion_failed (file=file@entry=0x7fe590cb769c "../../../lib/isc/timer.c", line=line@entry=392, type=type@entry=isc_assertiontype_require, cond=cond@entry=0x7fe590cb0103 "task != ((void *)0)") at ../../../lib/isc/assertions.c:52
 isc__timer_create (manager0=0x7fe58d741010, type=<optimized out>, expires=<optimized out>, interval=<optimized out>, task=0x0, action=0x55bcf1af75c0 <connect_timeout>, arg=0x7fe58d74e018, timerp=0x7fe58d74e288) at ../../../lib/isc/timer.c:457
 bringup_timer (query=0x7fe58d74e018, default_timeout=<optimized out>) at ../../../bin/dig/dighost.c:2949
 send_udp (query=0x7fe58d74e018) at ../../../bin/dig/dighost.c:3135
 connect_timeout (task=<optimized out>, event=<optimized out>) at ../../../bin/dig/dighost.c:3265