Test suite fails with SIGPIPE on *BSD

[rdmark]

  ninja: Entering directory `/home/runner/work/netatalk/netatalk/build'
  [1/9] Compiling C object test/afpd/libafpdtestlib.a.p/_home_runner_work_netatalk_netatalk_etc_afpd_catsearch.c.o
  [2/9] Compiling C object test/afpd/libafpdtestlib.a.p/_home_runner_work_netatalk_netatalk_etc_afpd_enumerate.c.o
  [3/9] Compiling C object test/afpd/libafpdtestlib.a.p/_home_runner_work_netatalk_netatalk_etc_afpd_directory.c.o
  [4/9] Compiling C object test/afpd/libafpdtestlib.a.p/_home_runner_work_netatalk_netatalk_etc_afpd_afp_dsi.c.o
  [5/9] Compiling C object test/afpd/libafpdtestlib.a.p/_home_runner_work_netatalk_netatalk_etc_afpd_filedir.c.o
  [6/9] Compiling C object test/afpd/libafpdtestlib.a.p/_home_runner_work_netatalk_netatalk_etc_afpd_fork.c.o
  [7/9] Compiling C object test/afpd/libafpdtestlib.a.p/_home_runner_work_netatalk_netatalk_etc_afpd_file.c.o
  [8/9] Generating test/afpd/afp_dtrace.o with a custom command
  [9/9] Linking target test/afpd/afpdtest
  1/2 test1 OK              0.03s
  2/2 test2 FAIL            0.04s   killed by signal 13 SIGPIPE
  >>> UBSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 MALLOC_PERTURB_=91 MSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 ASAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1 LD_LIBRARY_PATH=/home/runner/work/netatalk/netatalk/build/libatalk /home/runner/work/netatalk/netatalk/build/test/afpd/afpdtest
  
  
  Ok:                 1   
  Expected Fail:      0   
  Fail:               1   
  Unexpected Pass:    0   
  Skipped:            0   
  Timeout:            0   
  
  Full log written to /home/runner/work/netatalk/netatalk/build/meson-logs/testlog.txt

[rdmark]

In the latest main code and latest vmactions runners, this now affects only DragonflyBSD. FreeBSD and OmniOS have started working.

   1/2 test prep  OK              0.01s
  2/2 test suite FAIL            0.02s   killed by signal 13 SIGPIPE
  >>> LD_LIBRARY_PATH=/home/runner/work/netatalk/netatalk/build/libatalk MALLOC_PERTURB_=32 ASAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1 UBSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 /home/runner/work/netatalk/netatalk/build/test/afpd/afpdtest
  
  
  Ok:                 1   
  Expected Fail:      0   
  Fail:               1   
  Unexpected Pass:    0   
  Skipped:            0   
  Timeout:            0  

On OpenBSD a SIGTERM is thrown instead, after a 30s wait.

  1/2 test prep  OK              0.01s
  2/2 test suite TIMEOUT        30.01s   killed by signal 15 SIGTERM
  >>> LD_LIBRARY_PATH=/home/runner/work/netatalk/netatalk/build/libatalk MALLOC_PERTURB_=21 UBSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 MESON_TEST_ITERATION=1 ASAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1 MSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 /home/runner/work/netatalk/netatalk/build/test/afpd/afpdtest
  
  
  Ok:                 1   
  Expected Fail:      0   
  Fail:               0   
  Unexpected Pass:    0   
  Skipped:            0   
  Timeout:            1