[PATCH] tests/pc: try to avoid creating a coredump

[Renaud Métrich]

The small patch attached tries to avoid having the SEGV signal create a 
coredump which is then stored in /var/lib/systemd/coredump/ directory on 
systemd enabled systems.

Also available as a PR: https://github.com/strace/strace/pull/196

The code coverage indicates a false positive since the patch only deals 
with tests/ directory, not src/, hence IMHO it's not possible that 
src/pidns.c gets affected or I'm missing something here.


Renaud.

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