```
Program received signal SIGSEGV, Segmentation fault.
0x000000001014e9d8 in io_set_finish_ (conn=0x0, finish=0x0, arg=0x0) at ccan/ccan/io/io.c:137
137 conn->finish = finish;
(gdb) bt
incoming=true) at connectd/connectd.c:394
```
Fixes: #7871
Reported-by: grubles
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-None: broken in this release