[test] fix unused returned value warning in test_hdlc
(#9256)
#1318
simulation-1.2.yml
on: push
Matrix: thread-1-3
packet-verification-low-power
9m 5s
packet-verification-1-1-on-1-3
15m 57s
expects
27m 40s
thread-1-3-posix
14m 24s
delete-coverage-artifacts
9s