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pthread_mutex_destroy(3) on FreeBSD

The text 5a73c15a5b34, as FreeBSD 3.2-RELEASE, FreeBSD 3.1-RELEASE, FreeBSD 3.0-RELEASE, FreeBSD 2.2.9-RELEASE, FreeBSD 2.2.8-RELEASE shipped it.

free resources allocated for a mutex

pthread_mutex_destroy(3) on FreeBSD now