gh-150406: check result of PyThread_allocate_lock for netdb_lock#150407

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KowalskiThomas:kowalski/fix-check-result-of-pythread_allocate_lock-for-netdb_lockKowalskiThomas/cpython:kowalski/fix-check-result-of-pythread_allocate_lock-for-netdb_lockCopy head branch name to clipboard